The Linear DT4 Activates four seperate Delta 3 receivers independently. It can also be used as remote UP, DOWN, and STOP control for commercial operators with the DR-4 receiver. It includes a test/operate LED and a visor mounting clip.
Specifications
Power: 9V battery (included)
Frequency: 310 MHz
Codes: 64 (set by dip switches)
Dimensions: 2.16 x .95 x 3.75 inches