Specifications:Alarm: powered by 1x 6F22 9V battery (not included)Remote controller: powered by 1x L828 battery (included)Dynamic current: <100mAAlarm decibel: >105dbWork temperature: -15~75Store temperature: -40~85Environment humidity level: 5%~98%Colour: BlackAlarm Size: 9.5x6x3.8cm(approx)Detection area: 10m， open space can up to 30m.Using method: Press the red button A， fortification will beep; press the B button to cancelPacking list: 1*Anti-theft Alarm