| Manufacturer | Shenzhen City Speed Technology Ltd. |
| Category | Building interfacing equipment |
| Price | ￥120.0 |
| Origin | Canton |
| Imported or not | Yes |
| Brand | Speed |
| Goods | SU-690-D1 |
| Model | SU-690-D1 |
| Power voltage | 5 |
| Type | Wireless doorbell |
| Whether or not to export a source of goods exclusively across borders | Yes. |
| Product Specification | One to one, one to two, one to three, one to four, single watch launcher, single watch receiver, one to more, one to more. |
