Fireangel FireAngel FA3820-T2 10 Year Sealed Battery Alarm Carbon Monoxide & FireAngel Optical Smoke Alarm with 10 Year Sealed For Life Battery, FA6620-R (ST-622 / ST-620 replacement, new gen) , White

Product 1: Advanced electrochemical sensors detect dangerous levels of Carbon Monoxide ( CO ) in your home and alerts you with a clear, loud alarm

Product 1: As well as being calibrated and rigorously tested in-house the alarms have been third party approved through the British Standards Institute (BSI) and are Kitemark certified

Product 1: The units have been designed to either be wall mounted or left portable so you can take it on holiday for protection on the go. They're also suitable for caravans, motor caravans and boats

Product 1: The devices offer maximum protection for homes & rented properties as are is supplied with a sealed, tamper-proof battery which will last the lifetime of the alarm

Product 2: The perfect replacement for FireAngel ST-622, ST-620 and ST-750 models, this alarm will fit on to the existing baseplate, or can be installed easily using the supplied base and 2 screws

Product 2: With optical sensing technology smoke is rapidly detected as it enters the alarm chamber, for a quick reaction to slow burning fires

Product 2: The alarm comes with a sealed, tamper proof battery that will last the lifetime of the alarm. It is recommended that smoke alarms are replaced every 10 years

Product 2: Featuring a quiet test function which means you're less likely to wake up loved ones or disturb the neighbours when testing your alarms