The small box protruding from the light fixture above a building entrance is a direct wire-in photocontrol manufactured by Mulberry Metal Products of New Jersey, costing in the region of $5-15 apiece. This simple technology senses ambient light, and is hardwired into the electrical circuit of the light itself to switch it on and off at specified light levels.

Typedirect wire-in Photocontrol
Owner/AdministratorPrivate Building
ManufacturerMulberry Metal Products