Linear DT-3+1 Four Button Transmitter
The DT3+1 4-channel Common Gate Access Transmitter is a hand-held four-channel transmitter with a three-channel section plus an individual one-channel section
Linear DT-4 Four Button Transmitter
The transmitter can be used with one four-channel receiver (DR4), two two-channel receivers (DR2) or four single-channel receivers (DR, DRQ or DRM)