Includes receiver and Two DTC transmitter 24 Volts, 3-wire upgrade kit Compatible with all Linear Moore-O-Matic Delta 3 products 310 MHz frequency, 8 dip switches for gate or garage door openers Batteries and visor clips included Linear Moore-O-Matic Delta 3, garage door opener receiver and Two Remote Kit DS. 24 Volts, 3-wire upgrade kit, includes receiver and Two DTC transmitter. Compatible with all Linear Moore-O-Matic Delta 3 products including transmitter models DT, DTC, and DT2A. 310 Mhz frequency, 8 dip switches for gate or garage door openers. Compatible with the Homelink system. Batteries and visor clips included.