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Technical ParameterPower Source: DC 9V BatterySize: 83x30mmQuiescent current: 5~10uAAlarming decibel: >=85db/3mRelated Current: 16mAfor more details please contact :-Office : 03 9200 8681Mr. Chin : 012 377 3678https://www.vcomp2u.com
It is always good to request for the original receipt from the seller to verify the authenticity of the item.