433Mhz Wireless Door Contact Sensor [S212] 





https://www.youtube.com/watch?v=KwqdL7r8VGY


* Specs

Feature:

100% Brand New! 

Wireless door / window entry detector.

These sensors are used to 

protect the opening of doors and windows.

Easily mounted by adhesive tape to window or door.

specification:

Working frequency: 433 MHz.

Power supply: battery 23A(include).

Working distance: more than 100 m.

Working temperature: -10-50.

Size: approx. 70x37x15
Battery Type : Alkaline 23A 12V 

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