Please select the proper output mode(Normal(12VDC)Long(13.5VDC)/Ex-Long(15VDC)) on the basis Please that there is sufficient space for heat dissipation (vertical installation suggested),so that it can work properly Put the CCTV power supply in dry place. that screws and wires are tightened while making connections. 10-30% allowance should be retained according to ambient temperature; overload and improper use are prohibited Working Voitage: Input voltage: 150-285VAC CCTV Power Supply Output voltage: DC 12V/13.5V/15V( by switch) Applications: Applicable to all kinds of CCTV products and any other load matching products Storage Condition: Normal temperature, away from moist and sunshine Colour:As Shown Material:plastic Specifications:HD4C50W Package Contents: 1 x CCTV Camera Power Supply Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.