Wireless detection of door and window openings enhances home security
Built-in light sensor automatically triggers lighting when movement is detected
Appliance automation via SwitchBot app for convenient lighting and device control
Remote alerts and voice alarms notify users and trigger Alexa if a door opens
Easy wall-mount installation with long battery life for hassle-free setup
Product Description
Security Monitoring: Detects door/window openings, enhancing safety for elderly, children, and pets. With the built-in light sensor, it will automatically trigger the Switchbot Bot to turn on the light when someone moves when the environment goes dark.
Detects People Leaving or Entering the Home: Recognizes when yo
Sensor Size
70.5 x 25.5 x 23 mm (2.8 x 1.0 x 0.9 in)
Magnet Size
35 x 12 x 12.5 mm (1.4 x 0.5 x 0.5 in)
Weight
Contact sensor with batteries 49 g (1.7 oz), Magnet 13 g (0.5 oz)
Power Source
Battery-powered
Connectivity
Wireless
Mounting Type
Wall
4.4
19 ratings
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Five stars
Love it keep up the good work
R
Rahul · May 5, 2026
They work great and quick
I have a few of the contact sensors around my house. I generally use them with bluetooth with my home assistant and bluetooth repeaters- they work instantly and are easy to use with automation.
S
Scott · November 18, 2025
Works like a charm!
Got some sensors to use with my smart curtain setup. Works exactly how I needed them to. My window frames didn’t have a lot of space to set up the components exactly how it’s suppose to be, but I made it work with some double sided 3M tape.