The TORK 2115 SPST Die Cast Aluminum Photo Control is great for Parking lot lighting, building perimeter lighting, outdoor signage applications. Our Photocell responds to the light spectrum near to that of a human eye not to light flashes creating energy savings. Conformal coated cadmium sulphide photocell resists of effects of moisture and airborne contaminants. The TORK 2115 SPST Die Cast Aluminum Photo Control is great for Parking lot lighting, building perimeter lighting, outdoor signage applications. Our Photocell responds to the light spectrum near to that of a human eye not to light flashes creating energy savings. Conformal coated cadmium sulphide photocell resists of effects of moisture and airborne contaminants.