Features: This motion sensor alarm is ideal for protecting your property from unwanted intruders. They are most commonly used in PIR based motion detectors . There are no wires to connect, just put in the necessary batteries (requires 4 AA not included). You can use a 6V adapter that you can also fix to a suitable surface and switch it on using one of the supplied remote controls. It has a built-in PIR motion sensor which will activate the alarm if movement is detected. Adjustable wall mounting bracket s: 110 scanning area It can be located to cover the door of driveway, back door, garage, shed, outbuildings etc. It is also suitable for use on caravans and motorhomes. Features: Power supply: 4 AA batteries (not included) White color Size: 6.2 x 5.5 x 2.6 cm. Material: ABS Type: wireless Loud 105 db alarm Package includes: 1 x alarm sensor 2 remote controls 1 x mounting bracket