
Specifications
Product Name
Brand YoSmart
Model DS77-
Weight 38.2g
Color White
Operating
environment
Indoors
Operating
temperature range
-10° to 5
Operating humidity
range
0-
Storage temperature
range
-
Communication
Protocol
KT-LoRa
Door Sensor and
2017 KingTing Tech. Corporation
71.2 x 35.9 x 20.4mm
x 12.3 x 20mm)

Peel off the tape backing and mount the sensor and magnetto a window or door.
Position the sensor so that
the arrows on the magnet and sensor enclosure align.
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Enhance with the YoSmart hub
For text message or email alerts, your door sensor mustbe added to the hub.
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Add a door sensor
Follow the on-
screen instructions to add your door
Press and hold the Set Button for about 5 seconds till the status LED is green blinking.
Test alerts
When door is open or close
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receive app push message or mobile phone

Factory Reset
After factory
resetting, all settings will be cleared.
Carefully open the bottom case of door sensor.
Press and hold the Set Button for about 20 seconds till there the status LED is green and red
the Leak Sensor in a location that may experiencea water leak.
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Add a leak sensor
Follow the on-
screen instructions to add your leaksensor to the hub.
Press and hold the Set Button for about 5 secondstill the status LED is green blinking.
Place your leak sensor onto a wet sponge no more than1cm deep.
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After the test alerts, return the leak sensor to its location.
After factory resetting, all settings will be cleared.
Carefully open the bottom case of Leak Sensor .
and hold the Set Button for about 20 seconds till the statusLED is green and red blinking
alternately.
Door Sensor and
2017 KingTing Tech. Corporation

Refrain from using harsh chemicals or cleaning agents on thedevice. Only use a clean, dry cloth to
clean the device.
Do not use rechargeable batteries.
Do not dispose of batteries in fire as they may explode.
Please follow your local battery disposal procedure.
Do not puncture batteries,. Electrolyte leakage from thebatteries is corrosive and can cause
serious harm to the eyes or skin. If swall
Do not allow conductive materials such as jewelry or metaltools to make contact with the
batteries which may cause ashort circuit. With a short circuit, the batteries and
conductivematerial can become extremely hot and c
This commitment can only be applied to YoSmart hubprovided by KingTing Tech. Corporation.
Except specifically promised in this warranty, our company doesnot warrant any other stated or
implied promisesincluding marketability and applica
If there is any incorrect, altered, or blurred information, thevalid warranty date will be effectively
a month after the dateof production automatically.
Within the free repair warranty period, our company or ourauthorized
right to retain problem parts afterreplacement.
Thank you for purchasing YoSmart products. Please fill in the warranty card as guided and ask for
a purchasing invoice in the purchase of YoSmart product.
This product includes a 12-
month limited warranty, starting from the date of purchase. Your
purchasing invoice and warranty card are necessary for the warranty to be valid.
Please make sure that all the information you filled in the
Free exchanged service is offered within a month from the date of purchase for all YoSmart
products excludingaccessories. If the warranty period is changed, please referto the warranty
ed at the time of purchase.
Our free services are offered to rectify manufacturing defects or other quality issues during the
We promise to offer free return service within 7 days of purchasing.
Our services are void when:
l Your warranty card is invalid.
l
You cannot provide the purchase invoice and warranty card.
Your warranty card has been altered or the serial number on your warranty card is not same
2017 KingTing Tech. Corporation
owed, the electrolyte can be toxic.
bility of any particularfunction.
service agents retains the
warranty card is correct and printed

as the serial number on your hub.
This device complies with
Part 15 of the FCC Rules. Operationis subjected to the following two
conditions: (1) this device maynot cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
quipment has been tested and found to comply with limitsfor a Class B digital device,
pursuant to Part 15 of the FCC rules.
These limits are designed to provide reasonable protection againstharmful interference in
residential installations. This equipment
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
ularinstallation. If this equipment does cause interference to radio ortelevision equipment
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 me
Reorient or relocate the receiving antenna.
Move the equipment away from the receiver.
Plug the equipment into an outlet on a circuit different from that to which the receiver is
Consult the dealer or an experienced
You are cautioned that any change or modifications to the equipment not expressly approved by
the party responsible for compliance could void Your authority to operate such equipment.
es to throw away your product, please recycle all the components possible.
Batteries and rechargeable batteries are not to be disposed in your domestic waste! Please
recycle them at your local recyclingpoint.
Together we can help to protect the environment
2017 KingTing Tech. Corporation
generates, uses, and can radiate radio frequency energy,
radio/television technician for additional suggestions.

FCC Caution:
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.
Any Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
Note: 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 reasonable 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 a circuit different from that to which the
receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help.