... for your Hotel,Supermarket,House,promotion etc. Motion sensor sound module is very suitable for your Hotel,Supermarket,House ... close to or pass by motion sensor sound module and pre-recored sound will start to play.2)Your ... will be welcomed.3)We have motion sensor sound modules of three different sizes,Separatly 30mmx40mmx23mm(h), ... or ODM design will be welcomed .5)With good sound quality.