Use for safeguarding automated gates, overhead doors, and/or as a sensor. Its NEMA-rated enclosure ensures your photo eye will withstand the roughest elements. Automated driveway gates require safety precautions that protect against entrapment and hazardous pinch points. -Easy-to-wire terminal strip, compatible with most gate operators. Sign In to access your account information. Wiring Sensitivity Dark Switch OMRON E3K Reflector Type Photo Eye (24 to 240 VAC or VDC) UL 325 Compliant Instructions Set Dark Switch to Dark ON.