UdiRC U28-1 User guide

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FPV 720P 120° Wide-angle HD Camera

First Person View / Aerial Photography / Real-time Transmission / Live Video and Photo

Heading Hold Mode / 360° Flip / Low Battery Alarm / Out of Range Alarm / One Button Take Off/Landing

U28-1

User Manual

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Catalog

Important Statement

Safety Precautions

Safe Notice for Drone Battery

Charging Instruction for Drone Battery

Checklist before Flight

Instruction for Drone and Transmitter

Flight Operation Instruction

Functions Introduction

Spare Parts

Troubleshooting Guide

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1. Important Statement

Thank you for buying UDIRC's product. People who under 14 years old must not use the product. Please read this brochure carefully before using the product. You are regarded as accepting all content in this user manual when using this drone.

This product is not an ordinary toy but a piece of complicated equipment which is integrated with professional knowledge by mechanic, electronic, air mechanics, high-frequency emission etc. The users promise to be responsible for their behavior when using this product and relevant parts. The users promise to use the drone and relevant parts for legal purpose, and agree to obey above rules and local laws and regulations.

We undertake no liability for those accidents caused by environment, illegal behavior, improper operation and refitting of the drone after sale of the product.

We have entrusted the distributor to provide technology support and after-sale service. If you have any questions about use, operation, repair etc., please contact the local distributor.

* Keep the packing and user manual so as to refer to the important information whenever.

2. Safety Precautions:

This drone is suitable for experienced RC drone user aged 14 years or above. This product contains small parts, please put it out of child’s reach.

(1) Flying Area

The flying field must be legally approved by your local government. Do not fly the drone near the airport. Keep far away from the airport more than 5km when flying a RC drone. Flying field must spacious enough and we suggest at least 8M (length)*8M (width)*5M (height).

(2) Use correctly

For safety elements, please only use UDIRC’s spare parts to replace the damaged parts. Improper assembly, broken main frame, defective electronic equipment or unskilled operation all may cause unpredictable accidents such as drone damage or human injury. Please pay special attention to safety operation and have good knowledge of accident responsibility that the user may cause.

(3) Keep away from obstacles and crowd The speed and status of a flying RC drone is uncertain and it may cause potential

danger. So the user must keep away from crowd, tall building, power lines etc. when operating a flying RC drone. Do not fly a RC drone in rainy, storm, thunder and lighting weather for the safety of user, around people and their property.

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(4) Keep away from humid environment The drone inside is consisted of precise electronic components. Humidity or

water vapor may damage electronic components and cause accident.

(5) Safe operation Please operate the RC drone in accordance with your physical status and flying

skill. Fatigue, listlessness and improper operation may increase the rate of accident.

(6) Keep away from rotating parts

Rotating parts like propellers or motors may cause serious injury and damage. Keep face and body away from rotating parts.

(7) Keep away from heat The RC drone is made of metal, fiber, plastic, electronic components etc.

Keep away from heat and sunshine to avoid distortion and damage.

(8) The drone should be controlled within max control distance. Do not fly the drone near tall building, high voltage cable or other place with signal interference. Or may cause signal interruption and the drone will out of control, which may result of accident.

(9) Do not touch the hot motor to avoid being burnt.

(10) Please use the recommended charger only. Power off the drone before cleaning the RC drone. Check the USB cable, charging plug etc. regularly to ensure they can work well. If there is any damage, stop using it immediately till it’s fixed well.

3. Safe Notice for Drone / Transmitter Battery

* Do not put the battery on high temperature place, such as fire or heating device to avoid damage or explode.

* Do not use the battery to crash or hit hard surface. * Do not put the battery in water and keep it in dry place. * Do not open the battery. * Do not leave the battery without supervision when charging. * Make sure that there is no short circuit of the power wire. * Please use the recommended charger only. * Check the charger’s wire, plug, surface regularly. Do not use any broken charger.

* If do not fly the drone more than one week, maintain the drone battery with about 50% power to keep its performance and working life.

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4. Charging Instruction for Drone /Transmitter Battery

1. Connect the attached drone / transmitter battery with USB charger first and then choose one of the method as below picture shown to connect with USB plug.

2. The red USB indicator light keeps bright when charging. And the light turns green when fully charged.

* For faster charging, it is recommended to use a adapter with 5V 2A output current (not included) to charge the battery

Power BankPhone Charger

Drone / Transmitter Battery

Computer Charging Car Charger

Wasted Lithium-Polymer batteries must not be placed with household trash.

Please contact local environmental or waste agency or the supplier of your

Li-Po Battery Disposal & Recycling

model or your nearest Li-Po battery recycling center.

5. Check List Before Flight

(1) Make sure the drone battery and transmitter battery are fully charged.

(2) Make sure the Left Stick of the transmitter in the middle position.

(3) Please strictly obey the order of turn on and turn off before operation. Turn on the transmitter power first and then turn on the drone power before flying; turn off the drone power first and then turn off the transmitter power when finish flying. Improper turn on and turn off order may cause the drone out of control and threaten people’s safety. Please cultivate a correct habit of turn on and turn off.

(4) Make sure the connection is solid between battery and motor etc. The ongoing vibration may cause bad connection of power terminal make the drone out of control.

(5) Improper operation may cause drone crash, which may arouse motor defective and noise, and then effect the flying status or even stop flying. Please go to the local distributor to buy new parts for replacement so that the drone will return to its best status.

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6. Instruction for Drone and Transmitter

6.1 Drone

Top View

Propeller Guard Propeller Guard

A Propeller

B Propeller

Propeller

Guard

Front LED Light

(Green)

Landing Gear

Rear LED Light

(Red)

Front

Rear

Bottom View

Camera

B Propeller

RightLeft

Upper Cover

A Propeller

Propeller Guard

Lower Cover

Front LED Light (Green)

Landing Gear

Rear LED Light (Red)

Battery Cover

Specification

Drone Size

Drone Weight

Propeller Diameter

Flying Time

Remote Control Technology Transmitter Battery

Drone Battery Main Motor

Battery Charging Charging Time for Transmitter Battery

156x165x65mm

68.5g

55mm

5.30~6.30mins

2.4Ghz

3.7V 500mAh

USB Charger

Charging Time for Drone Battery

Max Flying Distance/Radius

Max Image Transmission Distance/Radius

Camera Resolution

65~75 mins

50m

40m

1280x720P

3.7V 450mAh

8520x4

50~60 mins

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Exploded View

No.

A Propeller (Clockwise)

Clockwise Motor (Red and Blue Wire)

Rear LED Light (Red)

B Propeller (Counterclockwise)

Counterclockwise Motor (Black and White Wire)

Front Light (Green)

Propeller Guard

Upper Cover

Receiving Board

Name Name

No.

Drone Battery

Camera Board

Camera Cover

Landing Gear

Camera Antenna

Propeller Guard

Battery Cover

TF Card

Lower Cover

Landing GearBattery Holder

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Propeller Installation Diagram

1. Insert the spanner between the motor and the propeller as Picture 1, then press down the spanner as Picture 2 to remove the propeller.

2. Aim at the hole and press the propeller down to the motor axis as Picture 3. Make sure the propeller are match perfectly with the motor as Picture 4.

Tip: Please use a new A Propeller to replace damaged A Propeller, and use a new B Propeller to replace damaged B Propeller.

Propeller Guard Installation Diagram

Transmitter

Front View

Left Stick

(Throttle / Rudder)

Left / Right

Rudder Trimmer

Picture 1 Picture 2

Picture 3 Picture 4

Right Stick (Forward / Backward / Left / Right)

TF Card Slot

Forward / Backward / Left / Right Flying Trimmer

Power Switch and Indicator Light

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Top View

High / Medium / Low Speed

Mode (Press Down)

Back View

Take Off / Landing /

Emergency Stop Button

Battery Cover

Brief Introduction for Button Functions

High / Medium / Low

Speed Mode

Left Stick

Right Stick

Left / Right Rudder

Trimmer

Forward / Backward

Trimmer

Left / Right Flying

Trimmer

Power Switch

Heading Hold Mode

Take Off / Landing /

Emergency Stop

Button

360°Flip Mode

Press this button to switch to High / Medium / Low Speed.

Move the Stick to forward / backward / left / right to fly the drone up / down / turn left / turn right.

Move the Stick to forward / backward / left / right to fly the drone forward / backward / left / right.

Press the right (left) button till the drone becomes balance if the drone rotates to the left (right).

Press the backward (forward) button till the drone becomes balance if the drone drifts forward (backward).

Press the right (left) button till the drone becomes balance if the drone tilts to the left (right).

Move the power switch to the right to turn on the transmitter, and to the left to turn off.

Press the button to enter heading hold mode, and press again to exit from heading hold mode.

Press the button and the drone will take off automatically. Press the button again and the drone will landing on the ground automatically. Press the button and hold it more than 1s, the drone propellers will stop and fall down immediately.

Press this button to do 360°flip.

360°Flip Mode

(Press Down)

Heading Hold Mode

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Battery installation:

Open the battery cover on the back side of the transmitter by the attached screwdriver. Connect the battery plug with the power plug as Picture 5, and then close the battery cover and tighten the screw as Picture 6.

Picture 5

Picture 6

Operation Instruction of Camera

To Pair The Camera And Transmitter

1. Turn on the switch.

VIEW

REC

SNAP

Press “ UP” button

2. Press “UP” button and hold it till the pairing menu appears.

Press “PAIR” Button

3. Press “PAIR” button and a 8 seconds countdown appears on the screen and then enters pairing search. The video menu will appear after successful pairing. Meanwhile, the transmitter will remember its paired camera automatically. Next time you need not to pair again. If you want to pair the transmitter with other camera. Restart the transmitter and repeat step 1 and step 2.

Notice: Do not move the Left Stick while pairing the camera and the transmitter to avoid inadvertently starting the drone.

DOWN

PAIR

EXIT

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To Record Video

3.“REC” starts to flash 1. Green TF Card Icon

REC

VIEW

2. Video Recording Button

REC

SNAP

DOWN

After successful pairing, the screen will enter video menu and show a green TF card icon at the top, which indicates the TF card had inserted to the camera (or the TF card icon will appear in red and flash if the card fail to insert to the camera). To record video, press “REC” button to start recording. At the same time, the “REC” icon will flash. Press “REC” button again to stop recording and the video will be stored in TF card.

Tip: The screen will show a “FULL” icon if the card is full storage and no more video can be stored in the card.

When finish recording, please remember to press the Video Recording Button again to save the video.

To Take Photo

2.“JPG” Icon

JPG

VIEW

REC

1. SNAP Button

SNAP

DOWN

Press SNAP Button and the “JPG” Icon will flash briefly, and then the picture will be stored in TF card automatically.

To View Stored Video and Photo

White TF Card Icon

View Button

VIEW

REC

SNAP

DOWN

Insert the TF card to card slot

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1. Take out the TF card from the drone and insert it to the the transmitter card slot. A white TF card icon will appear on the screen. Press VIEW Button to check the aerial photo or video.

Delete

BACK

DOWN

VIDEO PICTURE

DEL

BACK

DOWN

Video File Picture File

Press “UP” or “DOWN” button to choose a video file or picture file and then press “OK” button to select a file. Press “UP” or “DOWN” button again to choose a video or picture, and then press “OK” button to play.

2. Or take out TF card and insert the card to the attached card reader. Connect the card reader with computer USB port. After a while, view the aerial photography data from “my computer” - ” mobile disk”. Or you can insert the TF Card to the LCD transmitter to view the photo and video.

Tip: Please make sure the play software can support AVI format when you play the video in the computer.

Basic parameter for aerial camera: Video DPI 1280*720P; Image Size 1280*720P.

To Adjust the Screen Brightness

Up Button (brighter)

Down Button (darker)

VIEW

REC

SNAP

DOWN

Press “UP” or “DOWN” button to adjust the screen brightness.

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To Delete File

Press “DEL” button to delete file directly when viewing the video or picture. Or press “UP” or “Down” button to select a video or picture after entering the video or picture file, and then press “DEL” button and the screen will appear

DEL XXXXXX ? YES NO

button to delete the file. Or choose “NO” and then press “OK” to return.

Choose “YES” by “UP” or “DOWN” button and then press “OK”

7. Flight Operation Instruction

7.1 Frequency Pairing

1. Turn on the transmitter switch and the power indicator light flashes rapidly. Push the Left Stick all the way down to the lowest position and then release. The power indicator light flashes slowly, which indicates the transmitter is ready for frequency pairing.

2. Insert the TF card to the slot at the rear part of the drone body as below picture shown.

Insert the card to the slot

Insert the card to the slot Diagram

3. Connect the battery plug with the drone plug as Picture 7, then close the battery box. And the LED light starts to flash. Put the drone on the horizontal position to calibrate the gyro. The transmitter issues sound of “di do di”about three seconds later, which indicates successful code pairing and the LED light keeps bright.

Power on

Picture 7

Important Notice: Please make sure the drone is placed on the horizontal position after powering on the drone, so that the drone can work well.

Picture 8

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7.2 Checking

1. The camera is the drone front. The back of the drone should face the user and the front of the drone should face forward.

2. Power on the drone and check the direction of the rotating propellers. The left front and right rear A propellers rotating clockwise while the right front and left rear B propellers rotating counterclockwise.

3. Move the Left Stick and Right Stick as Picture 9 shown to start the motor and then release. Then push up the Left Stick to fly up the drone to certain altitude and then release.

Picture 9

4. Push up the Left Stick slowly to fly up the drone, and pull down the Left Stick slowly to the lowest end, then the drone will land on the ground slowly.

5. It’s recommend to repeat Steps 4 above to practice.

6. Adjust relative transmitter Trimmer button to adjust the rudder if the drone tilts to one side when flying.

7.3 Calibration Instruction

Please follow below steps to calibrate the drone if the drone becomes imbalance after crashing during the flight, and can not be adjusted by trimmer button and cause difficult operation.

1. Power off the drone, then turn off the transmitter switch.

2. Turn on the transmitter switch, push the Left Stick all the way down to the lowest position and then release. The Left Stick will back to the middle position automatically. The transmitter is ready for frequency pairing mode.

3. Power on the drone and put it on a flat surface in a horizontal position. The drone body lights change from flashing to solid bright, which indicates successful frequency pairing.

4. Do not move the Left Stick before successful calibration. Push the Right Stick as Picture 10 and then release. The drone body lights flash, which indicates that the drone is calibrating. When the drone body lights remain solid, which indicates successful calibration.

Picture 10

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7.4 Flying Control

Tip: Each time before the drone taking off, move the left and right stick down and in as Picture 9 shown to unlock the drone, then push up the throttle stick. Or press the Take Off Button.

Push the Left Stick up to fly

the drone up.

Left Stick

Pull the Left Stick down to fly

the drone down.

Move the Left Stick to the left to

rotate the drone to the left.

Move the Left Stick to the right to

rotate the drone to the right.

Press the Right Rudder Trimmer till balance if the drone rotates to the left, and press the Left Rudder Trimmer till balance if the the drone rotates to the right.

If the drone rotates

to the left or right

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Press the Backward Flying Trimmer

Right Stick

Push the Right Stick up to fly

the drone forward.

Pull the Right Stick down to fly

the drone backward.

Move the Right Stick to the left to

fly the drone to the left.

Move the Right Stick to the right to

fly the drone to the right.

till balance if the drone drifts forward, and press the Forward Flying Trimmer if the drone drifts backward.

Press the Right Flying Trimmer till balance if the drone drifts to the left, and press the Left Flying Trimmer till balance if the drone drifts to the right.

If the drone tilts

forward or backward

Right Stick

If the drone tilts

to the left or right

Push the Right Stick up to fly

the drone forward.

Pull the Right Stick down to fly

the drone backward.

Move the Right Stick to the left to

fly the drone to the left.

Move the Right Stick to the right to

fly the drone to the right.

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Functions Introduction

Two Take Off Methods

1. Method 1 (Take off): Push the Left Stick and Right Stick as Picture 9 shown to start the motor and then release. Then push up the Left Stick to fly up the drone to certain altitude and then release the stick.

2. Method 2 (One Button Take Off): Press the Take Off / Landing / Emergency Stop Button (Picture 11), the drone will fly up automatically and keep flying at an altitude of 1.2 meters approximately.

Two Take Off Methods

1. Method 1 (Landing): Push the Left Stick all the way down to the lowest position and hold it till the motors stop and the drone landing on the ground.

2. Method 2 (One Button Landing): Press the Take Off / Landing / Emergency Stop Button once shortly, and the drone will land on the ground automatically.

▲ Emergency Stop: When the drone in emergency situation and going to hit the walking people or obstacle etc., press the Take Off / Landing / Emergency Stop Button immediately and hold it for more than 1s. The propellers will stop immediately.

Tip: Do not use the emergency stop function unless in emergency situation. The drone will fall down suddenly after all propellers stop.

Take Off / Landing /

Emergency Stop Button

Picture 11

Altitude Hold Mode

Altitude hold mode indicates that the drone maintains a consistent altitude while allowing the user to use normal flying functions. It makes it easier to control the drone for beginner and more stable for aerial photography. Push the Left Stick up (down) to fly the drone up (down) at certain altitude and then release the Stick. The Stick will back to the center position (Altitude Hold Center) as Picture 12 shown. And the drone will keep flying at current altitude. Repeat above steps if you want to change the drone altitude.

Altitude Hold Center

Picture 12

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High / Medium / Low Speed Mode

High / Medium /

Low Speed Mode

Press High / Medium / Low Speed Mode button and the transmitter will beep once for Low Speed Mode, twice for Medium Speed Mode, and three times for High Speed Mode.

Low Speed Mode is suitable for beginner and High Speed Mode is suitable for expert to experience aerial stunt in outdoor.

Flip Mode

Press Flip Mode button and the transmitter will issue constantly sounds of beep and enter flip mode. Push right stick to any direction of up/down/left/right and then release, and the drone will do 360° flip in corresponding direction.

Tip: When the drone LED lights flash or the transmitter issues constantly sound of “di--di” for low battery alarm, the flip mode will shut down automatically.

Warning: Flying field must spacious enough and the flying height must at least 5M when doing a flip, or danger may occur.

360°Flip Mode

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Heading Hold Mode

* Drones generally have a front and rear indicated by LED lights or colored propellers. By default, the users are required to tell the front and the rear of the drone when flying. Under heading hold mode, the users can operate the drone without worrying about the orientation (left is left and right is right all the time, regardless of where your drone is pointing at).

Heading Hold Mode is designed for beginners and users who fly the drone in daylight or at a far distance.

When the drone in heading hold mode, push the Right Stick to forward / backward / left / right, and the drone will fly to forward / backward / left / right accordingly.

Prerequisite: Position the drone in such a way that its front is your front (see Picture 1). Tip: Do not change the orientation of the transmitter (see Picture 2) after entering heading hold mode.

Front

Left Right

Rear

Picture 1 Picture 2

To turn on Heading Hold Mode,

press Heading Hold

Left Right

Rear

Mode button and the drone LED lights flash, which indicates the drone enters heading hold mode. To turn off Heading Hold Mode, press Heading Hold Mode button again and the drone LED lights turn solid, which indicates the heading hold mode is off.

Heading Hold

Mode Button

Low Battery Alarm

When the transmitter in low battery, the transmitter will beep to remind the user to land the drone to replace the batteries as soon as possible. Or the drone may out of control.

When the drone in low battery, the transmitter will beep constantly to remind the user to land the drone as soon as possible. The flip function will turn off automatically when the drone in low battery.

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Out of Range Alarm

When the drone flying out of the max remote control distance 50 m, the transmitter will beep to alarm the user to fly back the drone immediately. Or the drone may out of control and fly away.

Propellers Stuck Protection

1. When the drone propeller is stuck, the drone body lights flash rapidly and the propellers stuck protection function turn on automatically. The motor will stop.

2. Move the left stick to the lowest end to turn off propellers stuck protection function. The drone body lights get solid bright and the drone is ready to fly.

Instruction for Receiving Board

The drone works well only when the installation direction of the receiving board and the connection position of the wires the same as below picture:

Front

Right-front motor

(white and black wire)

Right-front LED light

Right-rear LED light

Right-rear motor

(red and blue wire)

Blue wire

Black wire

White wire

Green wire

Gray wire

Yellow wire

Red wire

Blue wire

Red wire

Yellow wire

Gray wire

Green wire

White wire

Black wire

Left-front motor

(red and blue wire)

Left-front LED light

Left-rear LED light

Left-rear motor

(black and white wire)

Rear

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Spare Parts

For convenience, the spare parts are listed for you to choose, which can be purchased from the local seller.

U28-1-01

Upper Cover

U28-1-05

Landing Gear

U28-1-09

USB Charger

U28-1H-13

Receiving Board

U28-1-17

Iron Axis of the

Battery Cover

U28-1-02

Lower Cover

U28-1-06

Camera Cover

U28-1-10

Drone Battery

U28-1-14

Camera Board

U28-1-18

TF Card

U28-1-03

Propeller

U28-1-07

Battery Cover

U28-1-11

Clockwise Motor

(Red and Blue Wire)

U28-1H-15 Transmitter

U28-1-19

Card Reader

U28-1-04

Propeller Guard

U28-1-08

Battery Holder

U28-1-12

Counterclockwise Motor

(Black and White Wire)

U28-1-16

Transmitter Battery

U28-1-20

Spanner

U28-1-21

Screwdriver

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Problem Problem Cause SolutionNo.

The transmitter indicator light is off

Fail to pair the drone with transmitter

The drone is underpowered or can not fly.

The drone could not hover and tilts to one side.

The drone indicator light is off.

Could not see the picture.

Troubleshooting Guide

1. Low battery. 1. Replace the transmitter battery.

2. The battery positive pole and negative pole are in reverse order.

3. Poor Contact.

1. Indicator light is off. 1. The same as above 1.2.3.

2. There is interfering signal nearby.

3. Misoperation.

4. The electronic component is damaged for frequent crash.

1. The propeller deformed seriously. 1. Replace the propeller.

2. Low battery. 2. Recharge the drone battery.

3. Incorrect installation of propeller.

1. Fail to calibrate the drone. 1. Refer to the calibration instruction

2. The propeller deformed seriously. 2. Replace propeller.

3. The motor holder deformed. 3. Replace the motor holder.

4. The gyro did not reset after violent crash.

5. The motor is damaged. 5. Replace motor.

1. Low battery. 1. Recharge the drone battery.

2. The battery is expired or over discharge protection.

3. Poor contact.

1. Did not connect the wire of camera box or poor contact.

2. There is interfering signal nearby. 2. Cut off the wire and re-connect.

3. Damaged camera.

2. Install the battery in accordance with the user manual.

3. Clean the dirt between the battery and the battery slice.

2. Restart the drone and power on the transmitter.

3. Operate the drone step by step in accordance with the user manual.

4. To buy spare parts from local seller and replace damaged parts.

3. Install the propeller in accordance with the user manual.

4. Put the drone on the flat ground for about 10s or restart the the drone to calibrate again.

2. Buy a new battery from local seller to replace the battery.

3. Disconnect the battery and then connect it with the plug again.

1. Check the wire and connect well.

3. Buy a new camera box from local seller to replace.

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FCC Information

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.These limits are designed to provide residential protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not Installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception. which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

● Reorient or relocate the receiving antenna.

● Increase the separation between the equipment and receiver.

● Connect the equipment into an outlet on the circuit different from that to which

the receiver is connected.

● Consult the dealer or an experienced radio/TV technician for help.

FCC WARNING:

The equipment may generate or use radio frequency energy. Changes or modifications to this equipment may cause harmful interference unless the modifications are expressly approved in the instruction manual. Modifications not authorized by the manufacturer may void user’s authority to operate this device.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)this device may not cause harmful interference,and (2)this device must accept any interference received, including interference that may cause undesired operation.

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