New Wireless Remote Control Doorbell With Many Music Option. Easy To Install Just Remove The Sticker And Paste It To The Place Of Your Choice. Built In Double Speakers, Make Sound Clear, Especially Suitable For Homes, Offices, Factories, Hotels Etc. 100% New and original Baoji Brand Wireless Door Bell. Simple, Bright and no-wire design avoid troubles and save money as installation charge. Runs on 23A, 12V Alkaline Battery. Remote control range up to 100 meters in open air.