Avoid visible cords and reels with this non-monitored wireless system. Designed to provide a wireless signal transmission from the sensing edge to motor controls, this three-channel edge system has on-board diagnostics for easy setup and troubleshooting. The transmitter comes standard with a NEMA 4 weather-proof enclosure and both the receiver and transmitter have a compact design that allow for easy troubleshooting via the transparent cases. The transmitter is available with an optional audible alarm that activates when the battery has 25% of its life remaining.