The Hispec HSSA/HCO/RF10-PRO is a mains-powered multi-sensor alarm combining heat and carbon monoxide detection for reliable protection in areas with fuel-burning appliances such as boilers and heating systems. It uses a thermistor heat sensor and electrochemical CO sensor to deliver fast, accurate warnings with reduced false alarms. The unit offers wireless or hardwired interlinking with up to 20 Hispec alarms. When 1 alarm sounds all interlinked alarms with also activate, ensuring the whole-propertyis safety covered. A sealed 10-year lithium backup battery maintains operation during power failure, and the Fast Fix base speeds installation for trade professionals. Interlinked via Wireless or when Hardwired 230V AC Mains-Powered with Battery Backup 10-Year Sealed Tamperproof Lithium Integrated Battery 85dB Alarm at 3m Test/Hush Button Interlinked via Hardwire or Wireless With Upto 20 Hispec Radio Frequency Alarms Dual Heat & Carbon Monoxide Detection Fast Fix Base Supplied for Quick...