技术规格
| 参数 |
价值 |
| 特征名称 |
Feature Value |
| 带无线电控制(EF009356) |
No |
| 内置变压器(EF005910) |
No |
产品描述
Bells are typically used in residential construction and non-residential construction, offices, banks, etc. They are used to send alarm signals or to send general acoustic signals. These devices are u