{"id":5172,"date":"2023-06-19T01:34:04","date_gmt":"2023-06-19T01:34:04","guid":{"rendered":"https:\/\/www.wehopower.com\/?post_type=news&p=5172"},"modified":"2026-09-27T17:53:06","modified_gmt":"2026-09-27T09:53:06","slug":"the-importance-of-choosing-the-right-power-supply-for-your-cctv-cameras","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/fa\/news\/the-importance-of-choosing-the-right-power-supply-for-your-cctv-cameras\/","title":{"rendered":"CCTV Power Supply Selection for Multi-Camera Security Systems: Load, Voltage Drop and Backup"},"content":{"rendered":"

Last Updated:<\/strong> September 27, 2026<\/p>\n

Quick Answer:<\/strong> CCTV power supply selection for a multi-camera 12V system must start with the exact camera voltage range, worst-case simultaneous current, startup and infrared-load peaks, longest-cable voltage drop, required backup time, and enclosure temperature. The WEHO SC-120-12 used in this worked example provides a 13.8V main output rated up to 8A and a separate 13.4V\/0.5A charging output. It is not a universal replacement for every device marked \u201c12V\u201d: confirm that every connected load accepts 13.8V and validate the complete installation before release.<\/p>\n

\"CCTV<\/figure>\n

For a security integrator, a power-supply decision is not simply \u201ccamera wattage \u00d7 quantity.\u201d It is a system design covering the supply, conductors, branch protection, battery, cabinet, ambient temperature, and every camera\u2019s day\/night operating state. The WEHO SC security power-supply range<\/a> includes battery-charging designs, while PoE cameras require a different power path through a compatible switch or injector.<\/p>\n

This revision replaces the older article\u2019s generic sizing rules with an exact-model example. The product image is controlled by the enterprise-drive SC-120-12 photograph and current SC-120 specification. The two application images are materially different illustrative preparation environments: they show the source-controlled SC-120-12 during protected, unwired installation-fit planning at a logistics perimeter and de-energized visual service preparation on a parking-garage bench. Neither image claims live CCTV operation, a recorded electrical test, or a completed customer installation.<\/p>\n

\n
\n

\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/p>\n\u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u062f\u0647\u06cc\u062f<\/span><\/path><\/svg><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n