... 2) Battery powered 3)Electric magnetic carbon monoxide detector (co detector,co alram)1)MAINS POWERED ALARMSAC Input Supply Voltage: 110Vor ... .Audible Alarm Output :85dB at 1mOur company Sentek Electronics Co.,Ltd is specializing in designing,developing and manufacturing fire and secturity ... products are all designed and manufactured completetely according to the standard of EN,UL,KFI and so on .All our ...