The SD-W400X temperature and humidity controller is a digital circuit controller with a temperature and dew point sensor. It can control the temperature and humidity in a small environment by setting the temperature value. This product is divided into digital and dial, the digital is the temperature value collected by the sensor can be displayed directly through the digital tube, the minimum can collect to -20 ℃ temperature value; the dial is through the dial to set the temperature value, the controller when meet the set temperature value requirements automatically start the heating or fan element to achieve control. This product is divided into: heating type, cooling type and heating/cooling conversion type.
The SD-W400X series is a microcontroller‑based temperature and humidity controller with one temperature sensor and one dew‑point sensor, or a single temperature sensor option. It is available in a digital display version (SD-W400X) and a dial‑set version (SD-W400B) and supports heating, cooling, or combined heating/cooling modes.
The controller automatically starts a heater or fan when the measured temperature deviates from the set point by the programmed hysteresis, and it can be switched between heating and cooling modes via the “升/降” button. Installation dimensions, wiring, and test procedures are also provided. This manual is written in Chinese.
| Power supply | AC220V±10% 50Hz |
|---|---|
| Temperature range | 0~100 ℃ |
| Humidity range | 10%RH~98%RH |
| Dew‑point activation | ≤93%RH |
| Settable temperature range | 0~99 ℃ |
| Operating humidity | 45%RH~85%RH |
| Contact power (resistive NO) | AC220V 5A |
| Dimensions (mm) | 48 × 48 × 90 |
| Opening size (mm) | 45 × 45 |
Turn the dial to the desired temperature; for heating models set a temperature higher than the current reading to activate the heater, and for cooling models set a lower temperature to activate the fan.