Performance Meets 2016 UL 325 requirements Innovative industry leading low-energy Bluetooth® transmission up to 130 ft. range Integrated Diagnostics with Gate Operator Speed Installation Protects up to 8 entrapment points Receiver accepts up to 4 transmitters Transmitter accepts up to 2 wired resistive edges Harness and connector included on receiver for ease of install Battery life 2 years NEMA 4X rated Easy to see LED indicators for instant feedback, receiver-power-edge contacted Receiver Integrates to diagnostics codes system on the operator Compatible with LiftMaster Gate Operators with Monitored Safety Inputs, LMWETXU Transmitter and L50 and S50 Monitored Resistive Edges Includes: wireless edge receiver and transmitter, 2 AA lithium batteries, harness and mounting hardware