[Brad] was asked by his Sister to design a motion-based alarm that would ... at night and can be battery-powered. What he came up with is a light-sensitive motion sensor that uses very little ...

cars or animals enter your gate or wherever you place a outdoor motion sensor alarm. Solar powered: This driveway alarm system is powered by a battery, which is charged through the existing solar ...

Our Top PicksMost Versatile Motion Detection CamerasLorexKnown for their well-built, well-designed equipment, Lorex leads the ...