Mighty Mule RB709U-NB-OB Garage Door Receiver
The RB709 Garage Door Receiver/Adapter allows you to use the same Mighty Mule Two Button Transmitter or Three Button Transmitter to operate your gate opener as well as your garage door opener. Compatible with most garage door openers. Must be used with FM134 (two button) or RB743 (three button) transmitters.