Installing and maintaining CCTV and alarm systems on remote or temporary sites presents unique health and safety challenges. These sites often lack permanent power supplies, have limited access, and may be exposed to harsh weather, increasing the risk of equipment failure, electrical hazards, and unauthorised access. A robust risk assessment should consider the Working at Height Regulations 2005 for camera placement (Regulation 7), the Electricity at Work Regulations 1989 for safe cabling (Regulation 5), and BS EN 50131 (Intruder and hold‑up alarm systems) alongside BS EN 7958:2019 (CCTV – Management and operation). Compliance with the Data Protection Act 2018 (UK legislation) and GDPR is also essential when recording personal data. Properly selected equipment – such as weather‑rated enclosures, BS EN 60950‑1 compliant power supplies and BS EN 62479‑1 compliant alarm panels – reduces failure risk. Regular inspection, testing and maintenance, as well as clear sign‑posting and training for site staff, ensure the systems remain functional and do not become a source of new hazards. Battery backup failures are a common cause of system downtime on remote sites, so verifying battery health during each quarterly check is critical. This toolbox talk equips workers with practical steps to safely install, operate and maintain CCTV and alarm systems on temporary or remote locations, protecting both personnel and assets. For further guidance see the HSE site security guidance BS EN 7958 and BS 8220 and the legislation.gov.uk entry for BS EN 50131.