Features: 1) Low power consumption 2) Sounds: "dingdong", "well welcome", 1-melody type, 16-melody type 3) We can supply doorbells with various different designs, sizes, materials and colors according to clients' requirements Place of Origin: China Brand: Yilin Payment Terms : 20% deposit Quantity: 500,000pcs/month Minimum Order : 1,000pcs Delivery Lead Time : 20 days