LED TwistLock Style Photocells Twist Lock 120-277V - Our LED TwistLock Style Photocell allows the sun to work for you and reduces the cost of energy. LED TwistLock Style Photocells Twist Lock 120-277V features include:. LED Compatible. Silicon Light Sensor/IR Filtered. Zero Cross/DC Relay for attenuation of In-Rush Current. MCU Circuitry - Conformal Coated PCB. MOV Surge Suppression. 120-277VAC or 480VAC. On/Off Lux: 16 Lx/24 Lx. 1000 Tungsten Watts. Delay On: 0-10 Second. Delay Off: 5-20 Second. Ballast VA: 1200 @ 120V & 1800 @ 208-277V. Amps: 8A@ 120V & 5A@ 208-277V. Midnight Off. Fail On. IR Filtered Photodiode. Twist Lock Mounting. Polycarbonate Housing. IP65 Outdoor Rated. Operating Temp: -40° To 158°.