This series features stem mount and is equipped with a light level slide adjustment. Provides a 1/2"-14 threaded stem. A washer gasket and locking nut are packaged with each photo control. Product Features *CSA Listed C22.2-55 LR38068 *UL Listed UL773A E42722 *5 Year Warranty Product Specs *Size - 1-9/16" (4.0cm) Square x 3" (7.6cm) Long *Activation - 1-5 FC "ON"; 3-15 FC "OFF" (w/o Shield) *Color - Gray