Infrared sensor (passive) via radio. Scope: 11 m x 12 m. Compatible with Domonial, Vista and Galaxy® systems. Double temperature compensation with automatic threshold adaptation. Pulse counter and sensitivity selectable. TAMPER: opening and wall mounting. Bidirectional communication via radio (RF). Power supply: 1 LI03V battery (supplied) duration: 5 years. Dimensions: 112 x 60 x 40 mm. EN50131-2-2 Certificate: 2008 Grade 2 environmental class II. Adjustable immunity option for pets, from 0 to 36 kg.