This detector is optimized to distinguish false alarms from small birds, cats and dogs. Two operating modes: Pet mode protection up to 7.5 x 2m. For indoor applications, pets inmunity can be optionaly deactivated up to 10 x 2m. Uses a narrow beam pattern of optics from 0,5m to 5m, its allows motions near door or windows protected without false alarms. It integrates detection of creep zones. Dimensions: 123 x 61 x 43 mm. 5 Years duration (Nominal). Requires 2 x AAA alkaline batteries (Not included).