＃Power source:1、DC9V 2、AC220V 3、DC9V&AC220V
＃stand by current<6uA, alarm current<10mA
＃working way is selectable: ionization or photoelectric
＃Alarm sound:≥85db
＃Working temperature: -10Cº」50 Cº
＃Low Battery Alert 7 days
＃Can be used separately as well as in combination of up 40 Items
＃Packing Size:42×50×50cm(120pcs)
＃G.W./N.W.:19/10.5KG
