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In today’s modern workplaces, CCTV cameras are everywhere – keeping an eye on entrances, desks, and corridors to ensure safety and peace of mind. But what if that vigilant security system is quietly putting your team’s eyesight at risk? If your office CCTV has switched to infrared (IR) “night vision” mode – even in a brightly lit environment – it could be blasting invisible light straight at your employees. We’ve seen this issue crop up time and again during our installations and audits, and it’s not just a glitch; it’s a health concern backed by UK regulations.

Don’t worry if your system isn’t from us – this guide is for any business with CCTV, whether it’s a budget setup from a big-box retailer or a high-end network. We’ll break down the risks, why it happens, and simple steps to make your cameras safer (and smarter) without breaking the bank.

The Invisible Threat: What Happens When IR Mode Kicks In Uninvited

Most CCTV cameras automatically flip to IR mode when they detect low light, using powerful built-in LEDs (often rated for 30–50 meters of night vision) to illuminate the scene for black-and-white footage. These LEDs emit near-infrared light at wavelengths like 850nm – invisible to the human eye, but potent enough to “see” in the dark.

In a well-lit office (think standard fluorescent or LED overheads at 300–500 lux), this switch shouldn’t happen. But faulty light sensors, poor calibration, or even a flickering bulb can trigger it. Suddenly, those LEDs are pumping out 50–200 mW/cm² of IR energy – that’s 5–20 times the safe continuous exposure limit for eyes, according to the UK’s Health and Safety Executive (HSE) guidelines under the Control of Artificial Optical Radiation at Work Regulations 2010 (AOR 2010).

For someone sitting just 7 meters away (a common desk-to-camera distance), the effects might start subtle:

• Eye strain and dryness: That “gritty” feeling after staring at your screen? IR can reduce blink rates and dry out the cornea, worsening computer vision syndrome.
• Temporary visual disturbances: After-images or a hazy veil if someone glances toward the camera.
• Longer-term risks: Prolonged exposure (hours daily) could lead to thermal damage to the retina or even contribute to cataracts – especially risky for desk-bound teams who can’t “avert” from invisible light like they would from a bright bulb.
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We’ve audited offices where employees reported headaches and fatigue, only to discover the culprit: IR LEDs glowing faintly red (a telltale sign of 850nm models) in broad daylight. And it’s not rare – a quick scan of UK security forums shows frustrated IT managers dealing with the same on non-specialist brands.

UK Regulations: Why This Isn’t Optional for Businesses

As a NSI Gold-approved installer (like us at Moore Secure), we follow strict standards, but every UK employer does too. The HSE’s AOR 2010 regs require a risk assessment for any artificial optical radiation source, including CCTV IR illuminators. In occupied, lit spaces like offices, the verdict is clear: if ambient light is sufficient, IR must be controlled to keep exposure “As Low As Reasonably Practicable” (ALARP).

• HSE Guidance (CIS25): Recommends disabling unnecessary IR to avoid exceeding eye safety limits (e.g., 10 mW/cm² for extended exposure).
• BS EN 62471 Standard: Classifies many IR LEDs as Risk Group 2 (hazardous at close range), mandating warnings or controls in workplaces.
• Broader Implications: Non-compliance could trigger an HSE inspection, fines (up to £20,000+ per breach), or even civil claims if an employee suffers eye issues. Plus, under the Surveillance Camera Code of Practice, fuzzy IR footage might not hold up in investigations anyway – color mode gives clearer evidence.
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The good news? Fixing it is straightforward and doesn’t require ripping out your system.

Simple Fixes: Lock Your CCTV in “Day Mode” for Safer, Sharper Footage

No matter the brand (Hikvision, Dahua, or even a generic Wi-Fi cam), most cameras let you tweak settings via their app, web interface, or NVR software.

Why Bother? Beyond Safety, It’s Smart Business

Swapping to permanent colour mode isn’t just about dodging HSE headaches; it’s a win for productivity. Healthier eyes mean fewer sick days, and clear footage builds trust with your team (no one likes feeling “watched” by a creepy red glow). At Moore Secure, we’ve helped countless non-clients retrofit their systems during free audits – turning potential liabilities into assets.

If your setup feels outdated or you’re unsure where to start, we’re here. Whether in Cheshire, Hampshire, or beyond, our team offers no-obligation chats on making any CCTV safer. Drop us a line at info@mooresecure.co.uk or call 01794 523 470 (South) / 01625 528 471 (North). And while you’re at it, check our recent guide on CCTV signage laws – because secure and legal is the Moore way.

Stay safe out there – your eyes (and your footage) will thank you.

Moore Secure: Protecting Homes and Businesses Across the UK Since 1988. Be Moore Secure Today.