The ZTL Series Photocontrol is designed with enhanced ZERO-CROSS Switching Technology allowing it to withstand the high inrush currents commonly found in LED Luminaires. All LED, CFL, Induction, HPS and HID lighting fixtures requiring dusk to dawn control and enhanced protection against extreme inrush currents. Enhanced 510 Joule MOV surge device providing superior surge protection against unpredictable line voltage spikes.