Door/window compact magnetic contact. Compatibility: Galaxy Dimension & G2 (with RF portal), Domonial and Le Sucre™. New “alpha” radio protocol. Power supply : 1 battery LI03V (supplied). Battery life : ~5 years. Tamper : opening and wall mounted. Compatibility: Galaxy Dimension & G2 (with RF portal), Domonial. Measures: 100 x 22 x 23mm. White EN50131-1 Security Grade 2, Environmental Class II.