SONOFF® DW1 433Mhz RF Bridge Door/Window Sensor For Smart Home Alarm Systems
This device can be a great addon to your existant security system. It's great because it is wireless and can be triggered using RF signal.
Features:
Ultra-low power magnetic dedicated microprocessor
Supports wireless frequency of 433.92MHz
200m wireless transmit distance
Built-in antenna provided
Less than 1μA quiescent current
Specifications:
Support Battery: 12V 23A of type: GP23A
Wireless frequency: 433.92MHz
Protocol: EV1527
Quiescent current: ≤5μA
Emission current: ≤10mA
Operating environment: -10℃-50℃ (14℉-122℉)
Product Size: 77*49.5*18.8mm
Battery: length 27mm, diameter 10mm, this model doesn’t come with battery
Weight: 45g