TE Connectivity's (TE) AT series offers a durable control in areas where photocells are vulnerable to damage. The at series rugged die cast aluminum housing makes it ideal for any outdoor installation. Controls include a heavy duty bi-metal switch that provides a 30 - 45 second time delay. This virtually eliminates unwanted lamp cycling that could be caused by lightning, car headlights, or other sudden changes in ambient light level. Although the turn ON level is pre-set at the factory, each AT control is furnished with an adjustable slide bar that allows field adjustment in order to satisfy specific needs. Common uses include billboard lighting, areas vulnerable to vandalism, commercial or industrial use, and harsh and hazardous environments.