SAFE-TECH Mains Powered Interlinked Smoke Alarm offers an advanced optical sensor. Also, this Mains Powered Smoke Alarm has a 10-year backup tamper-proof battery. It complies with BS EN 14604:2005, meeting UKCA and CE requirements. Additionally, this alarm can be interlinked with our interlinked range. Its smart design seamlessly blends with any decor. The Hardwired Interlinked Smoke Alarm is compatible with Scottish legislation. Prioritise the safety of your loved ones and property with this alarm today. This Hardwired Interlinked Smoke Alarm suits Landings, Hallways, Loft, Bedrooms and Living Rooms. * A licensed electrician must install hardwired alarms and detectors! * Battery life may vary based on configuration, application usage, and features. We try to get you the best quality photo and size. However, all pictures shown here are for illustration purposes only. Actual product size and colour may vary slightly. For further instructions and Videos, please go here