Xiaomi Wireless Kinetic doorbell KWD-04W (white)/No battery required

Type: doorbell Unit of each commodity: 1 Call volume, dB: 100 Action radius, m:300 Call power supply: from the network Battery type: 3LR50 (A23, MN21, K23A, LRV08 (LRV8), 8LR932) Number of melodies: 38 Protection grade: IP44 Color: white, light white Warranty: 1 year Functions: battery pack, protection button, audio adjustment, indicator light.