Business security cameras: check what you have before you buy new ones

A camera system does four jobs. It records, it gives a picture you can use, it lets you look from anywhere, and it tells you when something is wrong. Most buying guides compare cameras. A more useful question is which of the four jobs is failing.

• The picture is not usable at night, in glare or from the wrong angle. That is a camera, lighting or placement problem. New or moved cameras fix it. Software cannot.
• The recorder is old, full or failing. That is a recorder problem. The cameras may be fine.
• You cannot look in from your phone. Often this is a setup or app problem, and the camera maker's own app or software can solve it without new cameras.
• Nobody knows something happened until the next day. That is the missing alert.

Walk the site at dusk and again at night with your phone showing each camera. For each one, ask what it is for: a door, a gate, a till, a stock room, a yard. Then ask whether you can actually see that.

Look for the small things. Is a shelf, a plant or a new sign in the way? Is the lens dirty or fogged? Does a light shine straight into it? Has someone knocked it out of aim? Fix what costs nothing, such as cleaning a lens, moving a shelf or re-aiming a camera, before you buy anything.

It also helps to decide what each camera is for. A close view at face height at the front door does a different job from a wide view of a parking lot. A good plan has both, and you know which camera is which.

Want to know when someone is on site after hours? Try it free for 7 days, no card

The recorder is the box that stores your video on hard disks. A DVR takes analog cameras on coaxial cable. An NVR takes IP cameras on network cable. A hybrid recorder takes both. Whichever you have, check four things.

• How many days of video it holds at your current settings.
• Whether the disks are healthy. Many recorders show a disk status in their menu.
• Whether the date and time are right. A wrong clock makes video hard to use.
• Whether you can export a clip and play it on another computer. Try it now, not the day someone asks for it.

A recorder or camera on your network is a computer, and it needs the same care. The US Cybersecurity and Infrastructure Security Agency (CISA), passing on advice from the UK National Cyber Security Centre, tells owners of internet-connected cameras to change the default password to a strong one, keep the software up to date and turn off remote access they do not use.

In our view, a recorder or camera whose maker no longer issues updates is a good reason to replace it, even if it still records. If yours is that old, you are not stuck: that is a case where new equipment is the right call.

This one decides how many choices you will have later. ONVIF is an industry standard that lets cameras, recorders and software from different makers work together. RTSP is a common way for a camera or recorder to stream video to other software. Many business cameras and recorders support one or both. Some systems, especially closed all-in-one and cloud-only ones, offer neither.

To check, find the brand and model on the label of your recorder, then open the maker's spec sheet and look for "ONVIF" or "RTSP". ONVIF keeps a public list of conformant products on its website, which is the official place to check a model. On newer equipment, look for ONVIF Profile T. ONVIF announced in October 2025 that it is phasing out Profile S in favor of Profile T, and said systems already running on Profile S are not affected.

If you are buying new, ask for ONVIF and RTSP support in writing. That keeps your options open if you want to add software later.

A closed system has real strengths: one app, one bill and one number to call, often with alerts built in. If those matter more to you than choice, a closed system can be the right call. Just know which one you are buying.

Ask any system the same question. When something happens at 2 a.m., who finds out, how, and how soon? There are three common answers, and none is right for everyone.

• Built-in alerts. Many cameras and recorders can notify you when they see motion or another event. Turn them on, live with them for a week and count how many were real. Newer cameras and cloud systems often have good ones.
• People watching for you. A monitoring service or guards watch the video or the site and respond. It is a different service, with a running cost, and some businesses need it. We do not provide it.
• Software that adds alerts to the cameras you own. That is what we do.

If your cameras and recorder are fine and what is missing is being told, you do not have to replace them. Here is how it works with ours.

• 1. Find your recorder's brand and model, and check its spec sheet for ONVIF or RTSP. We work with Hikvision, Dahua, Axis, Hanwha, Uniview, TVT, CP Plus, or any camera or recorder that supports RTSP or ONVIF.
• 2. Pick a Windows computer at your site that stays on and shares the recorder's network.
• 3. Install our software. It takes about 60 seconds and connects to your recorder. Your recorder keeps recording as usual.
• 4. Pick the cameras that matter. Mark zones, such as the back door or the stock room, and set your closed hours once for the site.
• 5. Choose who is told: you, a manager, whoever is on call. Alerts arrive as a photo with the camera and the time, on WhatsApp, Telegram or the Foreman app.
• 6. Run the free 7-day trial on up to 32 cameras, no card, and judge it by what it catches on your own site.

Our software watches for smoke and fire, for people after hours in the zones you mark, for a camera that has been covered, and for a camera that has gone offline. A second, larger model checks every event before it reaches you, which keeps false alarms down. Detection runs on site, and your recordings stay there. We never train on your video.

Some checks are set up for your site with our team, not switched on for everyone: helmet and vest checks, forklift near-miss and idle machines. Tell us what you need to see and we will set it up with you.

• We do not sell cameras or recorders.
• We do not provide guards, a monitoring center or police dispatch. We alert you and the people you choose.
• We do not replace certified fire alarms. Our smoke and fire alerts are an early warning on top of them.
• We cannot fix a picture that is dark, blocked or out of focus.
• Detection runs on site, but checking events and sending alerts need an internet connection at your site.

Some commercial property policies name protective safeguards, such as an alarm, that you must keep in working order, and failing to do so can affect a claim for fire or theft. Ask your insurance agent before you replace or switch off any part of your system.

Rules on cameras, signs, audio and watching staff differ by state and by industry. We cannot advise on them, so ask a lawyer about yours.