Online UPS for CCTV, Access Control and Security Sites
Cameras, recorders and door controllers are spread across many small sites, each on its own supply. We supply compact online UPS units that keep recording and doors working through outages.

What goes wrong
Typical power problems on these sites.
Gaps in footage
A short outage reboots cameras and NVRs, leaving minutes of missing video.
Doors fail open or locked
Access control without backup power can fail open or block exits.
Corrupted recordings
Hard shutdowns damage NVR disks and recording databases.
Unchecked sites
Small sites are rarely visited, so battery failure goes unnoticed.
What we would propose
Starting points; the final choice follows your load list.

H11
Single-phase online UPS
1–10 kVA
H11 online, 110 to 300 VAC input, for camera poles, gatehouses and small rooms.

H11R / H31R / H33R
Rack-mount online UPS
1–40 kVA
Rack-mount units for NVR and security server racks in control rooms.
Lithium-ion UPS
Lithium-ion for outdoor cabinets where heat and space limit lead-acid batteries.
Send us these for a quote
- Number of cameras, NVRs and access controllers per site
- Power draw per device or per site
- Required backup time
- Number of sites
- Indoor room or outdoor cabinet
- Monitoring needs (SNMP, dry contact)
Questions
What size online UPS does a CCTV system need?
Add up the power of cameras, NVRs, switches and monitors, add about 25 percent margin, and choose the backup time you need. Send us the device list and we size the UPS and batteries for you.
Can the UPS alert us when a remote site loses power?
Yes. An SNMP card sends alarms over the network, and dry contacts can signal an existing alarm panel.
Why online instead of a cheaper offline UPS?
An online UPS has 0 ms transfer and filters the supply continuously, so cameras and recorders do not reboot on dips. It also handles unstable supplies without draining batteries.
Five numbers get you a quote
Send what you know. We reply within one working day.
- LoadkVA or kW, and what it is
- Input voltage and phasese.g. 400 V three-phase, 50 Hz
- Output phasesSingle- or three-phase
- Backup timeMinutes at full or typical load
- SiteIndoor, temperature, altitude, generator





