1Automatic Safety Relay: The remote relay adopts Rf technology, and the learning code of the 433.92MHZ wireless transmission module has low repetition rate and relearning mode, with high safety. 2High Sensitivity: The receiver module provides high signal sensitivity and super anti jamming, the remote control distance is long, the remote control range up to about 75ft/23m and the signal is stable. 3Anti Interference: The wireless relay remote control adopts non directional wireless coding technology, which can be controlled independently without interfering with each other. 4Wide Application: This universal 12V wireless relay remote control kit can be used for garage door, offroad vehicle winch, ship winch, etc., high performance and strong reliability. 5Premium Material: Relay remote switch is made of upgraded premium Abs plastic, this remote control is wearproof, antiaging, high temperature resistant, not easy to break.