Services offered: System Design: To BS 5839 Part 1 and Part 6 Creation of Drawing Proposals. Consultation with Relevant Bodies. Consultation: Discussion and advice over all aspects of existing and new systems to meet relevant requirements and regulations. Power Supplies and Batteries. Detectors Sounders and Speech Based Sounders Gas valve and Special Interfaces. Fire Alarm Control panels: To BS EN54. Mains Linked 240-volt (combined with/without radio link) smoke and heat detectors. Smoke alarms comply with: BS 5446: Pt.1: 2000 Heat alarms comply with: BS 5446: Pt.2: 2003 Maintenance: The majority of all fire alarm systems can be supported.