... specialized in the design, manufacture and export of power supply. Our company mainly deals in transformer, rectifier ,switching power supply, CCTV power supply and power ... -10°C ~+60°C(Refer to output derating curve),20%~90% ... 0.5KvAC 1minInsulation impedance100M Ohms/500VDCCertificateCE ,ROHSPacking80pcs↓Clear Presentation↓↑Clear Presentation↑ HS-50W-5V DC switching power supplies for cctv system ...