Liftmaster 501041 Coil Cord, 2-Wire, 18 ga, 20 ft
Coil cord, 2-wire, 18 ga., 20 ft. extended
Each sensing edge requires a means to connect it to the door operator. The means must be able to extend and retract as the door moves. Coil cords and take-up reels fulfill this function. A wireless connection may also be used.
IMPORTANT NOTE: TAKE-UP REELS ARE NOT RECOMMENDED FOR USE WITH ANY FAILSAFE TYPE EDGE. USE COIL CORDS ONLY.