Product Name: Golden Coated Mechanical Dingdong Doorbell Model NO.: LRD-7 Power Source: Plug Waterproof: Not Waterproof Brand: Longriver Application Scope: Home Style: One to One Type: Mechanism Doorbell Trademark: Longriver Transport Package: Color Box Specification: ABS Origin: China HS Code: 85318090 Product Description Dingdong Mechanism doorbellAC 110v/220VGood soundQuality reliable, the bell can be used more than 5years.We have been exported to more than 20 countries.Any design and voice can OEM.Mr.Mike ZhenHefei Long River Electrical Co.,Ltd.Tel:+86 13956994028www.anhuibell.com