Steady 12V power for your coax cameras.
A CCTV power supply (PSU) feeds 12V DC power to your cameras. Analogue and HD-TVI cameras need one, because their power runs on a separate cable from the picture. IP cameras usually take power over the network cable (PoE), so they don't. We stock PSUs and distribution boxes from Excel, SPRO and our own Zenith Security Co. range, plus Tenda PoE injectors.
Which CCTV PSU do I need?
- Multi-way distribution box (4, 9 or 18-way): one mains supply in, a separate 12V output for each camera. The usual choice for a multi-camera HD-TVI system. Some boxes fuse each output, so a fault on one camera doesn't take down the rest. Check the listing for the model you choose.
- 4-way in-line PSU: a compact option for up to four cameras. SPRO make an unearthed version for 8MP cameras.
- Outdoor PSU: the Zenith Security Co. ZS-HAY-IP-24VPSU-1X4A is a 4A PSU rated IP66 (sealed against dust and water jets). Check its output voltage against your cameras on the product page.
- PoE injector: adds power to a network cable for one IP camera or device where there's no PoE switch.
We also stock Excel boxed switch-mode power supplies, including 1-door and 12-door models. One is 13.8V / 27.6V rather than 12V, so check the output before you order.
How do I size a power supply?
Add up the current (in amps) every camera on the box draws. Then choose a PSU rated above that total, so it has headroom. Cameras with infrared or a heater draw more at night or in the cold, so check each camera's datasheet rather than guessing. Our main power supplies page has the sizing rule for all our PSUs.
How do I avoid interference?
- Run 12V power on properly rated cable, not doubled-up data cable.
- Keep power runs away from mains wiring where you can.
- An undersized or poor-quality PSU is a common cause of rolling lines (hum bars) on an analogue picture.
For IP cameras, power usually comes from a PoE switch or the recorder's own PoE ports. See IP cameras.
Order before 2:30pm for delivery within 1–2 working days to England, Scotland and Wales. We don't ship to Northern Ireland. In the West Midlands? Collect from our Wolverhampton trade counter, but please call us on 01902 902251 first.
Power Supplies
Steady 12V power for your coax cameras.
A CCTV power supply (PSU) feeds 12V DC power to your cameras. Analogue and HD-TVI cameras need one, because their power runs on a separate cable from the picture. IP cameras usually take power over the network cable (PoE), so they don't. We stock PSUs and distribution boxes from Excel, SPRO and our own Zenith Security Co. range, plus Tenda PoE injectors.
Which CCTV PSU do I need?
- Multi-way distribution box (4, 9 or 18-way): one mains supply in, a separate 12V output for each camera. The usual choice for a multi-camera HD-TVI system. Some boxes fuse each output, so a fault on one camera doesn't take down the rest. Check the listing for the model you choose.
- 4-way in-line PSU: a compact option for up to four cameras. SPRO make an unearthed version for 8MP cameras.
- Outdoor PSU: the Zenith Security Co. ZS-HAY-IP-24VPSU-1X4A is a 4A PSU rated IP66 (sealed against dust and water jets). Check its output voltage against your cameras on the product page.
- PoE injector: adds power to a network cable for one IP camera or device where there's no PoE switch.
We also stock Excel boxed switch-mode power supplies, including 1-door and 12-door models. One is 13.8V / 27.6V rather than 12V, so check the output before you order.
How do I size a power supply?
Add up the current (in amps) every camera on the box draws. Then choose a PSU rated above that total, so it has headroom. Cameras with infrared or a heater draw more at night or in the cold, so check each camera's datasheet rather than guessing. Our main power supplies page has the sizing rule for all our PSUs.
How do I avoid interference?
- Run 12V power on properly rated cable, not doubled-up data cable.
- Keep power runs away from mains wiring where you can.
- An undersized or poor-quality PSU is a common cause of rolling lines (hum bars) on an analogue picture.
For IP cameras, power usually comes from a PoE switch or the recorder's own PoE ports. See IP cameras.
Order before 2:30pm for delivery within 1–2 working days to England, Scotland and Wales. We don't ship to Northern Ireland. In the West Midlands? Collect from our Wolverhampton trade counter, but please call us on 01902 902251 first.
- Zenith Security Co.
- Excel
- Excel
- Excel
- Sold OutTenda
- NewZenith Security Co.
- NewZenith Security Co.
- NewZenith Security Co.
- NewZenith Security Co.
- NewZenith Security Co.
- NewZenith Security Co.
