| 型号 | VAT621 | VAT631 | |
| 安装模式 | 墙面式 | 管道式 | |
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| 显示 | LED | LED | |
| 温度 | 20.0~50.0℃±1℃ | ● | ● |
| 继电器输出 | ● | ● | |
| 模拟输出 4~20mA/0~10V | ● | ● | |
| 湿度 | 0~99.9% ±3%RH | ● | ● |
| 继电器输出 | ● | ● | |
| 模拟输出 4~20mA/0~10V | ● | ● | |
| RS485 通信(网络通讯协议) | ● | ● | |
| 局域网通信(备选) | ○ | ○ | |
| 电源 24V AC/DC (110/220V AC可选) | ● | ● | |
| 温度单位 (ºC 或 ºF) | ● | ● | |
