◎ Adopts vibration, touch, movable omnidirectional detection principle.
◎ With low battery voltage indication.
◎ Transmitting frequency:433MHz/868MHZ±50KHZ
◎ Working voltage: 3V
◎ Working current:≤10μA
Model：MD-2018R
Working voltage：3V
Working Environment：-5℃～50℃
Alarm：vibration
Signal：150m （in open arca）
Working current： ≤10μA
