
Compatibility Type: This garage door remote control is not original. With a fixed code of 433.92 MHz, our garage door remote control is perfectly compatible with Ditec GOL4C, ZEN2C, ZEN4C. We recommend you refer to the list below for device compatibility before purchasing. Not Compatible: With a red top, our garage door hand transmitter only works with DITEC 433.92 MHz fixed code. It is not compatible with Ditec Rollig code, such as GOL4, which has a transparent top. 4 Channels: 4 buttons correspond to 4 independent channels, and each button can control one door opener individually. Radio Transmission Distance: 20-100m (Open Area) Programming Method: 433.92MHz Fixed Code Only. Copy your original remote control face to face.