Encryption with codeuse wheel. Reach radius up to 500 m in free field. Bidirectional Frequency: 868 MHz. Compatibility with several ranges of HONEYWELL™ panels: Domonial™, Galaxy™ Flex™ and Dimension™, Galaxy™ G2 (1) and Vista™ (2). LED indicators for feedback of user information. Battery Type: 3 V CR2032 x 1. Size (mm): 56 x 48 x 9. Protection Index: IP32. Black. Humidity: from 5 to 95%. Certificates: EN50131 level 2, Class II, NF & A2p.