The FireAngel FA6615-R optical smoke alarm is powered by 2 x AA replaceable batteries designed to power the alarm for 5 years, preventing the need for regular replacement. Featuring a quieter self-test mode which is activated via a single press of the test / hush button (10dB lower than the full alarm output) to make weekly testing easy, this alarm allows low battery warnings to be silenced for up to 8 hours with the Sleep Easy function. The FA6615-R can also be used to replace your existing FireAngel ST-622 when it reaches its end of life as both alarms use the same base plate. Features --Battery powered optical smoke alarm --Reduces nuisance cooking alarms --Large central test button --Sleep Easy - silence the low battery chirp for 8 hours --Operating Light (RED) - flashes approximately every 40 seconds confirming alarm is powered --Low Battery Warning - ‘beeps’ approximately every 40 seconds when the battery needs replacing --Loud 85 Decibel Piezo Electric Alarm --Suitable for leisure accommodation vehicles (LAV) --Easy Installation - fixings supplied --Quiet test function supports discreet testing at a lower volume when compared to standard alarms --2x AA Replaceable Batteries Included SpecificationsDetector TypeSmokeOperating Temperature Min4°COperating Temperature Max38°CProduct RangeFireAngel - Smoke AlarmsCountry of O.