Horn and Strobe, Product Type Horn and Strobe, Series Commercial Series, Sub-Brand Macurco, Color Blue, Features Audible Tone: Adjustable to Continuous (High/Low) or Temporal Four (High/Low), Low Current Draw, Operating Voltage: 16 to 33 VDC, Strobe Candela: Adjustable at 15, 30, 75, or 110 cd (Tested with Clear Lens Cover), Strobe Flash Rate: One Flash Per Second (20 ms Pulse Duration), Overall Depth 2 in