The DTK-PVP27BP provides surge protection for fixed analog and HDCCTV cameras running on coax cabling. Each device protects 12/24V power, and video conductors. Includes passive Balun conversion.Multi-stage SAD technology provides with best possible protection5 Amp, 12/24V circuit protects power feeds to camera, heater, blower or defrosterSingle point gorund inproves protection and speeds installation