Features: 1.Innovative waterproof design to prevent rainwater infiltration and prolong life; 2.36 pieces of music to choose from,different music and different moods will make your life full of new ideas; 3.The ringtone size can be adjusted,with four levels of volume,as you like; 4.Made of high-quality ABS material,green and environmentally friendly; 5.Wireless installation,simple and convenient; 6.Long-distance acceptance,minimize the probability of string code. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Batteries not included Description: 1.Receiver working voltage: 220V,working current 120mV at 220V,quiescent current 120mA at 220V; 2.Power: 2W; 3.Music: 36 chord music to choose from; 4.Working frequency: 315MHZ; 5.Controllable volume: 25-80dB 4 levels of volume adjustment options; 6.Remote controlreceiving distance 100m open area; 7.AC terminal pin: round plug European standard; 8.Transmitter working frequency: 315MHZ; 9.Transmitter working voltage: 12V battery model: 23A 12V; 10.Transmitter working current15mA calculated by 20 times a day,a high-quality battery can be used for one year 11.LED indicator: press the launch button,the LED indicator of the transmitter is on,the transmitter is working,and the receiver receives the instruction,and also sends out beautiful music to remind you that there are VIPs visiting,and the LED lights on the receiver are also accompanied by The music flickers regularly; this doorbell has an anti-seepage function,which can satisfy customers to place the outer door; 12.Temperature resistance: -10C50C 13.Receiver: length 9.5*width 6*height 3.4CM 14.Transmitter: length 8.4*width 6*height 2.3CM; Package List: 1 x Home Wireless Remote Control Doorbell