BUYER READING!
This Bluetooth door sensor must work with a Tuya Bluetooth Mesh Gateway(Hub). The door sensor can't send alarm without gateway !
How does the Door/window sensor connect with your phone
The Door/window sensor can help you monitor your entire house 24/7 uninterrupted even you are outside, avoid any accident in your home.Equip with the Smart Home Gateway/Hub,once the door sensor status changes(closed--open, open--closed),it will send information to the smart gateway hub, then the hub will send alarm message to your smart phone.
About Bluetooth Mesh
Bluetooth Mesh is the newest and the most advanced technology in smart home field for now. Theoretically speaking, 1 Bluetooth Mesh Gateway(Hub) is able to connect 65000 Bluetooth mesh devices !
The difference between Bluetooth Mesh, Bluetooth, ZigBee, Wi-Fi
Click the following picture to know more about Bluetooth Gateway.
Security Gets Smarter!
It will push notification messages to you when the door/window opens or closes, so you can discover the intruder in time while you are not home. Furthermore, you could share the device to your family members and track the history of sensor activities.
Compatible with Alexa & Google Home:
Simply use your voice to control the connected devices by Alexa or Google Home. It can also perform auto control together with other Tuya smart devices. Convenient for you to detect your doors, windows, cabinets, drawers or anywhere you want to be notified when it is opened or closed.
※ Not compatible with IFTTT
Easy to Install:
No complicated installation tools are required. The sensor can be installed with double-sided adhesive tape or screws(included) in just a few steps, and download app Tuya Smart or Smart Lifer from Google Play or App Store to add the device to detect the status of your door/window.
Specification:
* Connection: Bluetooth Mesh
* Power Supply: 2*AAA 1.5V Batteries(Not included in the package)
* Standby Time: 6-12 Months
* Operating Temperature: -20-60℃
* Standby Current:5μA
* Working Current: 10μA
* App: Android 4.4/iOS 9.0 or Later
* Alarm: App Push Notification
* Material: PC
* Net weight: ~42g
* Dimensions: 94*40*20mm(Host); 94*14*20mm(Magnetic Bar)
Smart Home Series -- Door Sensor[Bluetooth Mesh]
--Detect open/close status of the door/window and send alarm to cellphone once the status changes.
※ Door is opened/closed-- Door sensor sends signal to Gateway-- Gateway send alarm to App in your cellphone.
Smartphone App Remote Control
Home security in your hand all the time
Make Your Door/Window Smarter
Apply to:
House, shops, office, warehouse,financial office, cabinet, etc. Stay connected 24/7, instant alarm with history records in App.

Low Battery Reminder
You will be told to change the batteries in time.
Share the door sensor to your family
Have fun to enjoy smart home security.
Works with Amazon Alexa, Google Assistant
By connecting App to Amazon Echo, Google Home, you are able to voice inquiry the status of door sensor. For example: -Alexa, is the [device name] locked? -OK Google, is the [device name] locked?
Smart Remote Control is on sale: Only $12.99
--Click the following picture to know more.
Easy set-up in App
Three-step: 1. Download App & Register an Account 2. Add Bluetooth Door Sensor in App 3. Add Bluetooth Mesh Gateway in App
Easy to Install
No complicated installation tools are required. The sensor can be installed with double-sided adhesive tape or screws(included) in just a few steps, and download app Tuya Smart or Smart Lifer from Google Play or App Store to add the device to detect the status of your door/window.

Installation Notes
The Host and Magnetic Bar both have a triangle “△” in the side. To install the door sensor, please use double-sided adhesive tape or screws to fix them, meanwhile to align the triangle with another.