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Haes MISW-R Fire Alarm Mains Isolation Keyswitch - Red - BS5839 Compliant
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HUSH-ACTIV BS 5839-6 Grade C Stand-Alone Domestic Fire Alarm Kit - Albion Detection Systems
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Fire Alarm Spur 230V Mains Isolator Key Switch Fused to BS5839 - Red - by Midland Fire On-Line : Amazon.co.uk: DIY & Tools
Fire detection and alarm systems in dwellings to BS 5839-6: 2013 - Technique Learning Solutions
