| Manufacturer | Shenzhen City Speed Technology Ltd. |
| Category | Building interfacing equipment |
| Price | ￥90.0 |
| Origin | Wheyzhou |
| Imported or not | Yes |
| Brand | Speed |
| Goods | SU-691-C1 |
| Model | SU-691-C1 |
| Type | Remote 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 buttons, single watches, more contact service to drag |
