WiFi Door Sensor Window Detector: Smart Window Contact Sensor, Wireless Magnetic Door Open Detector with Free Notification Alerts, Compatible with Alexa Google Assistant (1-Pack)

This Smart Home Security Senso is an excellent security addition to any contact structure such as front door, mailbox, window, baby room, garage doors, skylights, safes, etc. All states of doors and windows are displayed simultaneously in the app.
Specification:
App: Smart Life app or Tuya Smart app
Material: ABS Plastic
Power Supply: 2pcs AAA Battery
Wireless type: ONLY Support 2.4 GHz WIFI (5G is not supported!）
Standby Current: 35uA
Working Temperature: -10°C ~ 50°C
Size: 7.2*2.5*2.0 CM
How to Add the sensor:
1.Download the Smart life or Tuya Smart app.
2.Log in to the app and press “+” in the upper right corner to add a sensor.(No hub is required)
3.Turn on bluetooth and Wifi, App will automatically discover the door sensor
4.Ensure that the surface of doors and windows is smooth and clean.
5.The installation distance should not exceed 0.7 inches and these two parts need to be aligned by their alignment notch.
WiFi Door Sensor with App Alerts: Tuya door sensor uses Smart Life as an app which is supported by Alexa. Protect your home with open/closed door detection. Receive APP Notifications on status change when opened or closed, with an entry save in History Log
VOICE CONTROL: By connecting the smart sensor with Alexa or Google assistant to realized voice control. For example, You have it on a door on the far side of the house, you can ask Alexa if the door is open instead of walking to the other end of the house to find out
Smart Home Automation: expand your smart home automation with smart door senso; set up your smart routines in the app; turn on your smart wall switches or lights automatically when the door is opened; turn off your air conditioning automatically when the window is opened; other intelligent devices such as smart bulb, smart plug, siren alarm can be synchronised as long as they are compatible with Smart Life app
Battery Included & Low Power Warning: Door open alert powered by 2*AAA batteries(INCLUDED). Enjoy over six months of battery life with this door alarm sensor. When the battery is running low, it will automatically push messages through App to remind you to change battery, never worry about running out of battery
Easy Installation: Without tools, Easy installa the door sensor alarm with included 3M sticker, firm and durable. You can install the alexa door sensor on front doors, garage doors, liquor cabinets, safety deposit box, pet doors and more. The contact sensor is also a good option as a mailbox sensor. No hub required