Motion sensor sound module 1,82.5mmx60mmx38mmH 2,light sensor to activate music 3, ... ,Material :ABS plastic6,Often it is 70-80decibels7,Your OEM or ODM design will be welcomed 8,When people close to ... or pass by it in 0-5meters and it will play ... is very suitable for Hotel,Supermarket,promotion,introduce of products or others.