| 型号 | VAT620 | VAT622 | VAT630 | VAT632 | |
| 安装模式 | 墙面安装式 | 墙面安装式 | 管道式 | 分离式 | |
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| 显示:LED指示 | ● | ● | ● | ● | |
| CO2测量 | 300~3000ppm | ● | ● | ||
| 300~30000ppm (农业应用) | ● | ● | |||
| 继电器输出 | ● | ● | ● | ● | |
| 模拟输出 4~20mA/0~10V | ● | ● | ● | ● | |
| 温度测量 | 20.0~50.0℃±1℃ | ● | ● | ● | ● |
| 继电器输出 | ● | ● | ● | ● | |
| 模拟输出4~20mA/0~10V | ● | ● | ● | ● | |
| 湿度测量 | 0~99.9% ±3%RH | ● | ● | ● | ● |
| 继电器输出 | ● | ● | ● | ● | |
| 模拟输出 4~20mA/0~10V | ● | ● | ● | ● | |
| USB接口 | ● | ● | ● | ● | |
| 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) | ● | ● | ● | ● | |