| Product Name | Mechanical door bell |
| Main Materials | PC/ABS,Nylon,Steel,Copper |
| Sound | Ding Dong sound in 8 5 dB |
| Color | White/Black or OEM |
| Operate Voltage | 110-240V AC |
| Operate Current | 155mA±15mA |
| Power Consumption | 3W-20W |
| Working Temperature | -40ºC to 4 5 ºC |
| Unit Packaging | color paper box |