The Precision Lumatrol T-15AL stem mounting photo control is a great choice for walkway lights, parking lot lights, and security lights and is specifically designed for locations where high vandalism occurs regularly, creating high maintenance needs. The heavy-duty cast aluminum housing is 20 times more resistant to high impact objects, like rocks and bats, than a standard plastic housing. Functional in temperatures ranging from -40 degrees to 170 degrees Fahrenheit, it is rated for 120 volts for the home or commercial setting. The SPST switch with an external light level slide allows on site adjustment. The 1/2-inch stem has 14 threads, fits a 1/2-inch knock out, and includes moisture proof, three color-coded 6-inch leads.