Twist Lock Dusk to Dawn Photocell replaces all brands of photocells for your area light. It works on mercury vapor, high pressure sodium or metal halide fixtures. This photocell locks in place with a simple twist.

Twist Lock Dusk to Dawn Photocell replaces all brands of photocells for your area light. It works on mercury vapor, high pressure sodium or metal halide fixtures. This photocell locks in place with a simple twist.