2023 En14604 Standalone Battery Smoke Detector Long Life Fire Alarm

JBE Photoelectric smoke alarmTechnical Specifications:  Power SourceDC 9V replaceable batteryQuiescent Current≤8μAAlarm Sensitivity0.10-0.16dB/mComply With StandardEN 14604:2005/AC:2008Alarm Current≤ 28mAAlarm Volume>85dB(A) @ 3 meters.Low Voltage Threshold≤7.5VProduct Service Life>10 yearsHumidity Range< 93% relative humidity (RH)Temperature Range0ºC to 40ºCSize100.8mm in diameter x 35.6mm deptSound PatternBI 0.5s - pause 0.5s - BI 0.5s - pause 0.5s - BI 0.5s - pause 1.5s, with the RED LED flash, repeat this alarm patternDetails of the product function:Standby modeAfter the product is installed, if the smoke alarm device operate properly, the red LED flashes once every 32 secondsAlarm modeWhen the smoke alarm device detect particles of combustion and the concentration of smoke reaches the alarm threshold, the red LED will flash once per second with pulsating alarm until the smoke is disappearedLow battery modeWhen the battery voltage bleow threshold, the red LED will flash once every 32 seconds with a sound of "chrip"Fault modeIf the alarm detection signal decays below threshold, the alarm chirp occurs without LED flashes every 32 secondsTest modeTest the unit to ensure operate properly by pressing the test button. At this time, the red LED will flash once per second with pulsating alarm until test button is releasedNOTEWEEKLY TESTING IS REQUIRED   /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1