Description:High quality material, stable, durable and environmental-friendly.The siren alarms when the power is cut off and automatic closing alarm function when power on.If there is a sudden power off, the alarm will to remind people, to prevent the thief cut off power.Easy to install and convenient to use, with 120db super loud siren voice.Widely used in industrial and mining enterprises, agencies, substations and other units, farms fishing grounds, ect.Specification:Material: PlasticSize: 10x5.5x2cm/3.94x2.17x0.79inchCable Length: 85cm/33.46inchPower: 9V Battery (Not included)Alarm volume: 120dbPackage Includes:1 Piece Power Cut AlarmNote:Since the size above is measured by hand, the size of the actual item could be slightly different from the size above.Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color of the pictures and the actual item.