| Manufacturer | Shenzhen City Speed Technology Ltd. |
| Category | Building interfacing equipment |
| Price | ￥ |
| Origin | Wheyzhou |
| Imported or not | Yes |
| Brand | Speed |
| Model | SU-1H, SU-2H, SU-3H, SU-4H |
| Type | Wireless doorbell |
| Product Specification | Single button, double button, three button, four button |
