Keri's new line of RF Transmitters and Receivers can be used with the PXL-250P, PXL-500P and NXT families of controllers. The TM line (2 button and 4 button) of Transmitters are usually attached to a key ring, and provide up to 500ft/150m of transmit range to the MS-1400 RF Receiver. The TM-20X and TM-40X have multiple buttons so they can be programmed for different receivers in the event that more than one gate is located within the transmitter's range.

The most popular application is for gated residential communities, where residents and employees can use the transmitter buttons to access the gates as they approach. Transmitters are available with an optional MS series or Farpointe 26 bit proximity insert allowing users to gain access to other secure areas and buildings within the facility by using proximity readers tied to the same system as the gates. Other applications include gated single-family homes, access control for vehicle fleets, and convenient disabled access.