1) Receiver working voltage: AC 90-260V, working current: ≤ 60mA , standby current: ≤7mA; 2) Power: ≦ 2W; 3) Music: 36 chord music to choose from; 4) Working frequency: 433MHZ; 5) Controllable volume: 20-80dB (4 file volume adjustment options); 6) remote control / … [Read more...] about Brand Waterproof Button 36 Chimes EU Plug Single Receiver Type Wireless Doorbell Cordless Smartthome Door Bells 300M Door Ring