Mains Powered Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - Kidde Slick SFW Series

This recommendation has been superseded by BS 14604:2005. All of our smoke and heat alarms conform to this standard in accordance with the Kitemark.

BS 5839-6 recommends that one or two storey HMOs with an individual floor area of no more than 200sqm (not the total of both floors) should have a Grade D smoke alarm system installed. Grade D refers to mains powered smoke alarms with a back up battery power supply. The alarms can be interlinked either by wire or by radio signal and the system does not require a separate fire alarm panel. For HMOs of 3 storey or higher, a Grade A panel system would need to be installed. This can cover the whole of the building, or can be used just for the communal areas with a separate Grade D system installed for the individual dwellings. For both applications, the level of cover should be a minimum of LD3 (in all escape routes) but this may change according to the fire risk assessment.

Yes, you need to add an RF base to just ONE of the existing smoke alarms. Make sure you connect the existing interconnect cable into the slot marked 'i' on the new RF base. Then you can add new RF slick smoke alarms to the system. Just make sure you go through the 'enrolment' process again to ensure all units recognise each other.