Details: Dimensions:6cm*4.7cm*15cm Power source: 9V battery(Not included) Weight:0.12kg Volume:120dB Package includes: 2*Door stop alarm How to use: 1.Put alarm between door and floor,turn on switch and set suitable sensitivity.The alarmer raises if door opens and instruder/master hear alarmer. 2.If an intruder attempts to open the door,the wedge-shaped design will prevent it from opening and activate a 120 DB alarm. 3.When traveling or when not using the unit be sure to turn the switch located on the back of the unit to the "off" position.
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