The key chain Transmitter is a two-button entry transmitter for Mighty Mule automatic gate openers. This convenient transmitter has a compact design that makes it easy to carry around in a purse, a pocket or on a keychain. The Keychain Transmitter can be programmed to work on any Mighty Mule gate operator, and the second button can work with either a second gate opener or a garage door opener (additional receiver required, RB709U-NB).

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The keychain remote control is easy to program, and its compact design enables it to fit comfortably in a pocket or a purse
Two button capability allows to use the transmitter with either two gates, or with a gate and a garage door opener
In order to enable the transmitter to communicate with a garage door opener, a garage door opener adaptor (RB709U-NB) must be purchased and attached to the garage door opener system
Other transmitters for Mighty Mule  gate openers are also available, including the single button transmitter (FM135) and the three-button transmitter (RB743)
Backed by a 12 month limited warranty