Yeeco Waterproof AC to DC Converter AC17-26V/DC17-40V to 12V Power Converter Power Supply Module Step Down Transformer for CD Camera CCTV System Gateway Other 12V Electronic Equipment Input Voltage: AC 17-26V / DC 17-40 V Output Current : 3 A MaxOutput Voltage: DC 12V 12v 3a power supply voltage regulation CCD Camera Gateway cctv camera power supply ac dc converter 12v DC DC converter 12v Protection function: Short circuit protection ,Over current protection ,Over load protection