Photo Cell 10" Lead

A photocell senses ambient light and switches circuits on at dusk and off at dawn, automating low‑voltage or line‑voltage systems.

Mount with a clear sky view away from eaves or uplights. Avoid shadows from trees and reflections from windows or bright signage.

Astronomical timers calculate sunset/sunrise by location and date and don’t rely on a light sensor; photocells react to actual light on site.

Choose LED‑rated models with proper minimum load and delay‑off features to prevent rapid cycling. Avoid mixing with incompatible dimmers.

Typical wiring: line → photocell → transformer/timer line input. Many pros use a photocell for dusk ON and a timer for OFF at set hours.

Yes—stray light can confuse sensors. Shield the photocell, adjust its angle, or relocate it to a representative ambient location.

Yes—pole‑mount, box‑mount, and corded plug‑in styles exist. Match voltage and connector type to your system.

Look for weatherproof housings (e.g., IP65+) and operating ranges suitable for your climate, including freeze‑thaw cycles.

Check sensor orientation, clean the lens, verify voltage, and test by covering the eye. Replace aged sensors that drift from set points.

Wipe the lens seasonally, ensure the gasket is intact, and re‑aim if landscaping or lighting changes alter ambient conditions.