We build fast, precise CCTV and network calculators for installers and serious DIY buyers — free, brand-neutral, and UK-first.
Why this site exists
Most CCTV tools are either locked to one manufacturer, buried in a 300 MB desktop download, or paywalled. We wanted something that just works in a browser, gives a straight answer, and never steers you toward a specific brand.
Who we are
The site is written and reviewed by working security systems engineers — see our authors for their background.