Photocells

Automatic dusk-to-dawn switching starts with a photocell that matches the fixture and circuit. Connection style, operating voltage and switching load establish the electrical match, while the sensor's supported mounting arrangement and position determine how it responds to ambient light at the installation. Choose daylight sensors instead when the project calls for a compatible daylight-responsive dimming strategy. For exterior switching, establish the required connection and control behavior before selecting a replacement by appearance alone.