PTZ Camera Surge Protector for Coax The DTK-DP4P provides surge protection for PTZ analog and HDCCTV cameras running on coax cabling.  Each device protects 12/24V power, 5V RS-422 data pairs, and video conductors. Multi-stage SAD technology provides with best possible protection 5 Amp, 12/24V circuit protects power feeds to camera, heater, blower or defroster Single point gorund inproves protection and speeds installation