230V mains-powered carbon monoxide alarm with tamper proof rechargeable 10-year lithium battery back-up. Features a high quality electrochemical sensor to detect the presence of carbon monoxide. Alarm will activate at 50ppm within 60-90 minutes, 100ppm within 10-40 minutes and 300ppm within 3 minutes. Can be interlinked with up to a total of 20 Hispec mains-powered fire safety devices, including smoke, heat and CO alarms (meaning that when one alarm sounds all interlinked alarms are also activated). Suitable for use in rooms containing a fuel burning appliance. Supplied with fixings. Interlinked when Hardwired 220 - 240V AC/DC Mains-Powered with Battery Backup 10-Year Sealed Tamperproof Lithium Integrated Battery 95dB Alarm at 3m Test/Hush Button Interlinked when Hardwired (20 Alarms can be Interlinked in 150m) Fast Fix Base Supplied for Quick & Easy Wiring Silence Nuisance Alarms Low Battery Warning Interlinked when Hardwired 220 - 240V AC/DC Mains-Powered with Battery Backup 10-Ye...