Spektrum SLT3 3CH, SPMRSLT300, SPMSLT300, SPMSLT310 User guide

™

SLT3 3CH

NOTICE

All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon Hobby, LLC. For
up-to-date product literature, visit horizonhobby.com or towerhobbies.com and click on the support or resources tab for this product.

Meaning of Special Language

The following terms are used throughout the product literature to indicate various levels of potential harm when operating this product:
WARNING: Procedures, which if not properly followed, create the probability of property damage, collateral damage, and

serious injury OR create a high probability of superficial injury.
CAUTION: Procedures, which if not properly followed, create the probability of physical property damage AND a possibility

of serious injury.
NOTICE: Procedures, which if not properly followed, create a possibility of physical property damage AND a little or no

possibility of injury.

WARNING: Read the ENTIRE instruction manual to become familiar with the features of the product before operating.
Failure to operate the product correctly can result in damage to the product, personal property and cause serious injury.

This is a sophisticated hobby product. It must be operated with caution and common sense and requires some basic
mechanical ability. Failure to operate this Product in a safe and responsible manner could result in injury or damage to the
product or other property. This product is not intended for use by children without direct adult supervision. Do not attempt
disassembly, use with Incompatible components or augment product in any way without the approval of Horizon Hobby, LLC.
This manual contains instructions for safety, operation and maintenance. It is essential to read and follow all the instructions
and warnings in the manual, prior to assembly, setup or use, in order to operate correctly and avoid damage or serious injury.

WARNING AGAINST COUNTERFEIT PRODUCTS: Always purchase from a Horizon Hobby, LLC authorized dealer to ensure
authentic high-quality Spektrum product. Horizon Hobby, LLC disclaims all support and warranty with regards, but not limited

to, compatibility and performance of counterfeit products or products claiming compatibility with DSM or Spektrum technology.

Age Recommendation: Not for Children under 14 years. This is not a toy.

NOTICE: This product is only intended for use with unmanned, hobby-grade, remote-controlled vehicles. Horizon Hobby

disclaims all liability outside of the intended purpose and will not provide warranty service related thereto.

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WARRANTY REGISTRATION

Visit www.spektrumrc.com/registration today to register your product.

SAFETY PRECAUTIONS

• Always ensure all batteries have been properly charged
prior to using the model.

• Always check all servos and their connections prior to each run.

• Never operate your model near spectators, parking areas
or any other area that could result in injury to people or
damage of property.

• Never operate your model during adverse weather
conditions. Poor visibility can cause disorientation and
loss of control of your model.

• Never point the transmitter antenna directly toward the

• If at any time during the operation of your model you

WATER-RESISTANT COMPONENT

Your new SR315/SLR300 Receiver has a special water-resistant
coating on the electronics to ensure reliable performance in
higher than average moisture conditions. This conformal coating
can offer mild protection from light drops of water.

• DO NOT submerge this product under water for any period

of time. If it is submerged, it may result in damage or loss of
function.

• DO NOT pour water onto or allow excess water to come in

direct contact with the product.

• DO NOT operate this product in heavy rain or snow.

• DO NOT expose this product to salt water (ocean water or

In case of excess exposure to water or debris, immediately
wipe down the SR315/SLR300 with a soft cloth, and allow it
to fully dry before next use.

NOTICE: Never use a pressure washer to clean your vehicle.
NOTICE: Make sure the other components in your vehicle are

waterproof or water-resistant before driving in wet conditions.

model. The radiation pattern from the tip of the antenna is
inherently low.

observe any erratic or abnormal operation, immediately
stop operation of your model until the cause of the
problem has been ascertained and corrected.

water on salt-covered roads), contaminated or polluted water.

1SPEKTRUM SLT3 USER GUIDE

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SLT3 TRANSMITTER PACKAGES

SPMRSLT300: SLT3 Transmitter only
SPMSLT300: SLT3 Transmitter and SR315 Receiver
SPMSLT310: SLT3 Transmitter and SLT300 Receiver

SLT3 TRANSMITTER FUNCTIONS

Specifications

Power Supply: 4 AA Batteries
Operating Frequency: 2.4GHz
Transmit Power: <100mw
Control Protocol: SLT
Control: Proportional Steering and Throttle/Brake with Trim Knobs,

Third Channel with 3 Position Momentary Switch

Auxiliary Functions: 3 Position Throttle Limit Switch, Steering

Rate Knob to Change Steering Travel on-the-fly, Programmable Servo
Travel for Steering and Throttle/Brake

A. Throttle Trim

Adjusts the throttle neutral point

B. Steering Trim

Adjusts the steering center point. Normally, the steering trim is adjusted until
the vehicle tracks straight.

C. LED

• Solid red lights: Indicates the power is ON and adequate battery power

• Flashing red lights: Indicates the battery voltage is critically low.

Replace batteries

D. Steering Wheel
E. Throttle/Brake
F. Steering Rate

On-The-Fly knob for travel adjustment on the steering

G. Channel 3

3 position momentary switch, middle position is neutral
For programming press up for A button, press down for B button

H. Throttle Limit

Limits throttle output to 50/75/100%
Select 50% or 75% for less experienced drivers or when you are driving the

vehicle in a small area.

I. Throttle (TH) Servo Reversing

Move the switch to reverse the throttle channel

J. Steering (ST) Servo Reversing

Move the switch to reverse the steering channel

K. Power Button

INSTALLING THE TRANSMITTER BATTERIES

This transmitter requires 4 AA batteries.

1. Remove the battery cover from the
transmitter.

2. Install the batteries as shown.

3. Install the battery cover.

A.A.
B.

C.

D.
E.

F.

G.

H.

I.

J.

K.

CAUTION: If using rechargeable batteries, charge only rechargeable batteries. Charging non-rechargeable batteries

may cause the batteries to burst, resulting in injury to persons and/or damage to property.

CAUTION: Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to

national regulations.

2 SPEKTRUM SLT3 USER GUIDE

SERVO TRAVEL

The servo travel on the Steering and Throttle channels can be adjusted through a special programming mode in the transmitter.

1. Begin with the transmitter binding process to the receiver complete. Power ON the receiver.

2. Hold full right and full brake while powering the transmitter ON to put the transmitter into programming mode.
The LED on the transmitter will flash 4 times to indicate it is in programming mode.

3. Turn and hold the wheel full left to set the travel limit for that direction, Press the A button to increase travel, press the B
button to reduce travel. The LED will flash once with every change. Return the wheel to center to set the travel value.

IMPORTANT: If the value has reached the maximum or minimum that can be accepted, the LED will not flash with further input.

4. Turn the wheel to the right and repeat the process to set the steering travel to the right.

5. For electric vehicles, power the Transmitter OFF to save the settings. Calibrate your ESC to the default throttle travel.

6. For fuel powered vehicles, set the throttle travel without the engine running; After setting steering travel, you can set
throttle travel with the same process. Pull and hold full throttle, adjust travel with the A and B buttons, return to center to
set the value.

7. Push full brake, adjust travel with the A and B buttons, return to center

8. Power the transmitter OFF to save the values.

FACTORY RESET

There is a hidden mode if you want to reset the servo travel and calibration in the transmitter.

1. Hold full left and full brake while powering the transmitter ON to put the transmitter into programming mode.
The LED will flash 4 times then turns OFF to indicate factory reset.

2. Release the wheel and throttle trigger back to neutral and the LED will illuminate to indicate factory reset is complete.

3. Power the transmitter OFF.

SPMSLR300 3 CHANNEL RECEIVER

Specifications

Type: FHSS 2.4GHz
Dimensions (LxWxH): 33.4mm x 21mm x 12.6mm)
Antenna Length: 140mm
Channels: 3
Weight: 6 grams
Band: 2.4GHz
Voltage Range: 3.5–9.6V
Bind Type: Bind Plug

SLT

Protocol

Auxiliary Channel

Steering Channel

Throttle Channel

BIND/ Battery port

LED

SLR300 BINDING

1. Insert the bind plug into the bind port on receiver.

2. Power on the receiver, the LED will flash rapidly to indicate it is in bind mode.

3. Power on the transmitter; the LED light on the receiver will stop flashing an stay illuminated to indicate binding is
complete.

FAILSAFE

Always set the failsafe position for zero throttle.

1. Power on the TX and RX ,make sure the transmitter and receiver are connected properly.

2. Hold steering, throttle trigger and AUX controls at the desired failsafe positions.

3. Insert the bind plug into the bind port on the receiver; The LED on the receiver will flash 3 times and then remain lit to
indicate the failsafe positions have been set.

SLR300 LED INDICATOR

• When the receiver enters bind mode, the LED flashes rapidly.

• If the receiver looses signal, the LED light flashes slowly to indicate it is in failsafe mode.

• When the receiver is connected to the transmitter, the LED remains illuminated.

• When setting the fail-safe positions, the LED light flashes three times and then remains illuminated.

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3SPEKTRUM SLT3 USER GUIDE