The Digi-Code CR2149 Universal Safety Beam Sensors are a replacement photoelectric sensor set for garage door openers that use monitored safety beams. This sender-and-receiver pair projects an invisible infrared beam across the garage door opening; if the beam is interrupted while the door is closing, the opener stops and reverses, helping meet modern safety requirements for residential and light commercial applications. The CR2149 is intended as a universal, retrofit-friendly option for systems that support external photo-eye safety inputs, making it a practical choice for replacing damaged or non-functioning “photo eyes” on many openers manufactured since the early 1990s.
These universal safety sensors are powered by the garage door opener’s low-voltage safety circuit, eliminating the need for a separate power supply. Installation typically involves mounting each sensor near the bottom of the door tracks, facing each other across the opening, and wiring to the opener’s photo-eye terminals per the opener’s manual. Proper alignment is required for reliable operation, and the system should be tested after installation to confirm the door reverses on obstruction in accordance with UL 325 safety practices. Because compatibility varies by opener brand and model, always verify that your operator supports external photoelectric safety sensors and follow the manufacturer’s wiring instructions when using the Digi-Code CR2149 as a replacement part or upgrade.