Door contact with auxiliary Input. Internal and External contacts work independently. Auxilliary input loop has tamper protection loop. Front & Rear Tampers. Enclosure protection: IP:30 / IK:04. Compatibility: Galaxy G2 (with RF portal), Domonial, VISTA (with 5882 euhs). Battery Life: >4 yrs. Operating Temperature -10° C to 55° C. Weight with Battery: 70g. Complete with Battery. EN/TS50131-2-6, Grade 2, Environmental Class II. measures (120 x 35 x 26 mm): 120 x 35 x 26mm.