... etc.) from entering the protected door, window and ceiling and so on. Popular used for window, door, safe guard box, cash box ... , ceiling, device, file cabinet, electrical contacted door and so on. With the high quality sensitive units, it guarantees using life and ... ; Mini current:10mA 4.Vibration sensor sensitivity: high--middle--low 5.Pulse output time: .5mS~50mS 6. Low battery alarm: Low battery LED ...