Promotional Voice doorbell

1) The special and pleasant sound of the doorbell have several bell for people to choose. 2) Delicate stramlined apperance show the special tasted of the host. 3) UP-dated intelligent falsh light design brings convenience to the hearing handicapped. 4) Ultra-distance representsthe technology of surpassing obstacles. 5) Wireless easy mounting design never affects your inner decoration and makes the doorbell anywhere you like. 6) All day long anti-interference system. 7) Energy saving design of enviroment protection, the battery can last for one year.( Press 20 times per day) 8) Delicate smart part, makes the doorbell a saluting angel of dwelling house. work building, hotel, building,factory and so on.