* Use for doors, windows, cabinet, drawer  (Not include metal doors)
* configuration: FSK coding scheme
* Frequency: 433MHZ
* Wireless distance: 100m(open space)
* Power: DV3V/1.5A (2*AAA batteries)
* Transmission mode: wireless
* Sensing method: magnetism
* Sensing distance: ≤1.5cm
* Send the reports to main device automatically every 60 minutes