CCTV Power Supplies

The voltage its label or data sheet states, usually 12V DC for analogue and many IP cameras, from a supply rated above the current the camera draws. Adapters such as the Folk Safe FS-12D1000-A at 12V 1A suit a single small camera, while a PTZ camera may need a larger supply or PoE. Check the plug size too, commonly a 2.1mm barrel.

Add up the current the cameras draw and keep the total below the supply rating, with some headroom. The Haydon HAY-PSUMULTI5A has 9 outputs sharing 5A and the HAY-PSUMULTI10A 16 outputs sharing 10A, and the Folk Safe FS-DC121820B has 18 fused outputs sharing 20A, about 1.1A per channel. A 1A plug-top adapter such as the FS-12D1000-A suits one camera.

Yes, with a battery-backed supply and a charged standby battery. Haydon boxed PSUs such as the HAY-PSU12V3ABB, which takes a 7Ah battery, and the HAY-DC24V5ABBLPSU switch to the battery when the mains fails, and the Folk Safe FS-DC121820B has an internal bay for a 7–20 Ah sealed lead-acid battery, sold separately. Runtime depends on the battery size and the load.

When the camera or device is rated for 24 VAC. Haydon 24 VAC supplies include the HAY-PSU4/1-1/4A24 with four 1A outputs or one 4A output, the HAY-PSU8/1-1/8A24 with eight 1A outputs or one 8A output, and the inline HAY-PSUINLINE3A24 at 3A. The HAY-PSU4/1-1/4A24 and HAY-PSU8/1-1/8A24 protect their outputs with auto-reset PTC fuses.

With a PoE midspan injector fitted between the network switch and the camera. The Hikvision LAS60-57CN-RJ45 injects up to 60W at 54–57V DC onto one Gigabit link, which suits a PTZ or other high-power network camera, and runs from 90–264 VAC mains. Data passes through on its two RJ45 ports, one in and one out.

Yes, with an off-grid solar power kit, in which a solar panel charges a battery that then powers the camera. The Hikvision DS-2XS6K01-C36S80 combines an 80W panel with a 360Wh lithium battery pack and gives 9-12.6V DC at a maximum of 30W through two 5.5mm plugs, suitable for most Hikvision outdoor cameras. Its enclosure is rated IP66.

A low-voltage AC transformer that converts 230 V mains to the AC voltage the doorbell needs, installed by a licensed electrician. The EZVIZ CS-TRANSFORMER BT16 (CS-CMT-A0) is a DIN-rail transformer with a selectable 8 V, 12 V or 24 V AC output rated at 8 VA. It mounts on a 35 mm DIN rail in an enclosure; check that the doorbell model is compatible before fitting it.

Yes, with a DC splitter lead, as long as the adapter can supply the combined current. The Haydon DC04 splits one 2.1mm input into four 2.1mm outputs, carrying up to 1 Amp per output, and the Folk Safe FS-DC1F4M splits one 5.5×2.1mm input into four 5.5×2.1mm outputs. For more than a few cameras, a boxed multi-output PSU with fused outputs is tidier.

They include plug-top adapters, inline supplies and multi-way units. The Folk Safe FS-12D2000-A is a plug-top power supply giving 12 V DC at 2 A through a 5.5×2.1mm barrel connector, and the Haydon HAY-PSUINLINE5A is an inline regulated PSU giving 12 V DC at 5 A, with short-circuit, over-current and over-voltage protection. The ESP CPS9W is a 9 way 12V DC 5A CCTV power supply with a 1.1A automatic fuse protecting each output.