The one on the right uses PTC “auto reset fuses”. The one on the left uses traditional one time use fuses. The above image shows the inside of two CCTV power supply boxes. If your security camera system uses a CCTV power supply box, I recommend that you check the fuses inside the box. Plug it in and test to see if you camera now displays video. Most are 12V DC.ĭisconnect your existing power supply from the cable and attach your spare. If you do not have a spare, you can find security camera power supplies here.īe sure to look at your existing power supply to confirm whether it is 12V DC or 24VAC. Many CCTV systems include individual DC power transformers for each camera (like the one in the above image).
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