The FireAngel Specification HM-SN-1 is a 230V mains-powered heat alarm with a sealed 10-year lithium battery back-up. It provides Class A1 heat detection (54°C to 65°C) using FireAngel's Thermistek technology, which combines a patented radiant heat dish, a high-performance thermistor and predictive monitoring for a quicker response to kitchen fires. It is Grade D1 as per BS 5839-6:2019 and is Smart RF ready: fit a FS1521W2 Smart RF radio module to wirelessly interlink with up to 50 FireAngel Smart RF products, including the FireAngel Connect Gateway.
Key features
- Thermistek heat sensing with a unique radiant heat dish
- Class A1 heat detection, 54°C to 65°C
- Sealed 10-year lithium battery back-up
- Smart RF ready with the FS1521W2 module; compatible with the FireAngel Connected gateway and app
- Mixed system compatibility: Smart RF and hardwired alarms, and mains and battery alarms, on a single network
- Low energy use: typically less than 10% of the average 230V AC heat alarm
- Centralised button for Test / Smart Silence / Locate
- Secondary buzzer
- Ultra-slim, integrated base plate for easy installation
- Supplied with a dust cap to protect the alarm during building work
Technical specifications
- Model: HM-SN-1
- Sensor type: Thermistek
- Alarm temperature range: Class A1, +54°C to +65°C
- Supply voltage: 230V AC, 50Hz
- Battery back-up: 10-year sealed-for-life lithium
- Alarm sound level: 85dB(A) at 3m minimum
- Installation position: ceiling
- Maximum connected units: 50 Smart RF devices
- Dimensions: 141.5mm diameter x 53mm depth
- Weight: 229g
- Operating temperature: +4°C to +38°C
- Operating humidity: up to 90% RH, non-condensing
- Storage: -20°C to +60°C, up to 93% RH non-condensing
- For use in: kitchen, garage and loft
- Grade D1 as per BS 5839-6:2019
- Certified to BS 5446-2:2003
- Warranty: 5 years
