Description Linear gate or garage door opener replacement transmitter for the Delta 3 system 310 Mhz frequency 8 dip switches (will work with up to 4 receivers, i.e. 1 gate 3 garage doors, 1 gate 1 light 2 garage doors…) Visor clip and 9v battery included Compatible with ALL Linear Delta 3 System products Same as DT4B Linear DT4 Programming Instructions



