The Seco-Larm Enforcer 2-Button Pendant RF Transmitter, CODEBUMP (3 Channels) is compatible with all 315MHz Seco-Larm receivers. It can operate three different channels through two buttons, allowing you to wirelessly control applications/devices such as home automation functions, garage doors, gates, house lights, alarm panels, or other devices connected to a Seco-Larm receiver. For example, each member of your family can carry a personal transmitter that operates your garage door opener. The transmitter comes with a keychain for easy access, and two buttons for simple operation. RF Frequency: 315MHz. Operating Range: Up to 500 feet (depending on installation and operating environment). Battery: X-930-096 (CR2032, included). Dimensions: 1-1/4 x 2-3/16 x 5/16 inches (31.5 x 55 x 8 mm). Credentials: FCC, IC. Warranty: 2 Years. Manufacturer Part #: SK-917T2-GNQ.