Strobes produce 1 flash per second over the regulated voltage range 24 VDC with wide UL �Regulated Voltage� using filtered DC or unfiltered VRMS input voltage Synchronize using the Wheelock Sync Modules or panels with built-in Wheelock Patented Sync Protocol Field selectable taps for 25 or 70 VRMS operation from 1/8 watt up to 2 watts High efficiency design for maximum output at minimum wattage across a frequency range of 400 to 4000 HZ Fast installation with IN/OUT screw terminals using #12 to #18 AWG wires