send signal to alarm host when detect vibration,sensitivity adjusted Main Feature: 1.Power supply: DC12V 2.Max current: 20mA, Mini current:10mA 3.Low battery alarm: Low battery LED is on when it is lower than 8V DC4.Sensitivity adjusted: High (H), Middle (M), Low (L)5.Wireless frequency: 433 MHz  or  315 MHz6. Transmitting distance200m in open space,30-50m in room7.Operating temperature: indoor -10 ~ 50, related humidity ≤ 95%

vibration detector