Check the listing for details. Linear DNT00027B DT-4A 310MHz 4-Channel Common Gate Access Wireless Transmitter. Condition: New. Listed at 38.86 USD. Linear DNT00027B DT-4A 310MHz 4-Channel Common Gate Access Wireless Transmitter Linear DNT00027B DT-4A 310MHz 4-Channel Common Gate Access Wireless Transmitter The Model DT-4A 4-Channel Visor Transmitter is a wireless radio control designed for use with automatic garage/gate operators and access control systems. The transmitter can be used with one four-channel receiver (DR4), two two-channel receivers (DR2) or four single-channel receivers (DR, DRQP or DRM).Activates four separate Delta-3 receiversCan also be used as remote UP, DOWN, and STOP control for commercial operatorsTest/operate LEDVisor mounting clip suppliedPower: 9-volt batteryCodes: 64 (set by dip switches)RF frequency: 310 MHzDimensions: 2.16" W x 3.75" H x .95" D Payments & Returns Policy