Texecom Ricochet Premier Elite Smartkey Iconic Keyfob GCC-0001

The Texecom Smartkey GCC-0001 Features: Mesh Network Wireless Technology Remote Arm, Part Arm and Disarm Alarm System Status Display Typical 2 to 3 Year Battery Life Suitable for Commercial Applications Frequency Band 868.0 MHz - 868.6 MHz EN50131-3 Grade 2 Also features Proximity tag built in, that works with all Texecom Proxy keypads. What batteries does it take?  1x CR2 Lithium Battery (Gives an average 2-3 Year Life)