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Grade D1 Systems
Under the requirements of BS5839-6 2019 a Grade D1 system is defined as a system with one or more mains powered devices containing a tamper-proof standby power supply (Battery).
All of the below devices are suitable for use as part of a Grade D1 fire alarm system.
- Lumi-Plugin LED Downlight & Smoke Alarm - Cool White (4000K)LP110WH4KMBWSA
- FireAngel HM-SN-1 Mains Powered Thermistek Heat Alarm with Lithium Back-Up BatteryHM-SN-1
> 230V Mains Powered Alarm
> 10 Year Sealed Battery
> Can be upgraded for radio-interlink£46.96 £39.13 As low as £44.78 - FireAngel SM-SN-1 Mains Powered Multi-Sensor Smoke Alarm with Lithium Back-Up BatterySM-SN-1
> 230V Mains Powered Alarm
> 10 Year Sealed Battery
> Can be upgraded for radio-interlink£46.96 £39.13 As low as £44.78
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