Smart Wifi- Window Sensor, Door Open & Close Detector, Home Security Alarm

Features:

Compatible with Alexa & Google Home.
Simply use your voice to control the connected devices by Alexa or Google Home. 
Enjoy Your Smart Life.
When you leave home, it will push notification message to you when the door/window opens or closes.
No complicated installation tools are required.
The sensor can be installed with double-sided adhesive tape or screws(included) in a few steps,

Specifications:

Operating Power: AAA 1.5V X2(Not including battery)
Wireless Type:2.4GHz(not support 5G )
Compound multi-layer design
.Built-in omnidirectional antenna
Superior circuit design
High-performance and low power consumption
Superior ABS material
Protocol: IEEE 802.11b/g/n
Shock resistence:4.7M,1.2M.3.5M,300k
Transmission distance:50-200m in open area

Package Included:

1 * tuya wifi door/window sensor

WARRANTY

We'll refund your money if the item hasn't been delivered within 40 days after purchase. You have 2 weeks to request a refund — until day 60.
Product doesn't match the description? Contact us within 30 days after you receive it!
In case of cancellation, money will be refunded to your account within 3 days.