The EE21 series transmitter is a high-precision temperature and humidity transmitter used for measuring relative temperature and relative humidity. It offers options for wall and pipe installation, with easy and quick replacement. The output can be selected between voltage and current. The transmitter can be equipped with optional radiation shield and special protective film for outdoor and harsh environment applications.
The EE21 series transmitter measures relative temperature and relative humidity with high accuracy. It can be installed on walls or in pipes using an insert‑type connector, and offers selectable voltage or current output signals.
The manual includes electrical connection guidelines, protection ratings, cable length recommendations, and details on sensor elements (HC1000 humidity sensor and Pt1000 temperature sensor). Power supply options cover both DC and AC ranges, and typical power consumption is listed for each mode. This manual is written in Chinese.
| Humidity measurement range | 0–100 %RH |
|---|---|
| Humidity accuracy | ±2 %RH |
| Temperature measurement range | -40 °C to +60 °C (‑40 °F to 140 °F) |
| Output current option | 4–20 mA (two‑wire, RL < 500 Ω) |
| Power supply voltage | 0–1 V 10–35 VDC or 9–29 VAC (various ranges) |
| Typical power consumption (DC) | 5 mA |
| Typical power consumption (AC) | 15 mA |
| Protection rating | IP65 |
| Cable length (standard) | 50 mm |
The EE21 transmitter measures humidity from 0 %RH to 100 %RH.