Wireless Smart Door and Window Sensor with Low Power LED Indicator

Wireless Smart Door and Window Detectors with Low Power LED Indicator and 12V 23A Battery Power Source Model:CX-87 Wireless Smart Door and Window Detectors Briefly describe: Wireless Door and Window Detectors is easily to use. Fits for residential, shop, factory, warehouse, department store and offices. Wireless Smart Door and Window Detectors Features: CX-87:Micro power special CPU; CX-87L / CX-87LF:Micro power special CPU, self-check open/closed status of doors and windows;