LEFOO LFH30 High Accuracy Temperature and Humidity Transmitter
Higher-accuracy relative humidity and temperature transmitter family. The model is listed in LEFOO’s official downloadable technical document index.
Manufacturer: LEFOO
Official Technical Datasheet
LEFOO original datasheet catalog — search model LFH30 →
Accuracy, measurement range, electrical outputs, probe length and installation environment depend on variant and current revision. Check manufacturer data prior to equipment specification.
LFH30 high-accuracy designation
‘High accuracy’ is not itself a quantified uncertainty specification. Obtain the LFH30-specific RH and temperature tolerances, test conditions, drift/long-term stability and calibration interval from LEFOO before setting a performance claim. In critical humidity control, sensor airflow and contamination matter alongside initial accuracy. Verify the delivered display/interface option and avoid transferring a generic LFH-series accuracy figure.
LFH30 — calibrated humidity and temperature channels
| Selection parameter | Verified manufacturer evidence |
|---|---|
| Relative humidity | 0–100% RH; accuracy ±2% RH at 20°C and 20–80% RH, ≤10 s response in slow-moving air. |
| Temperature | Order-specific 0–50°C or −20 to +60°C ranges; digital temperature accuracy 0.3°C over +5 to +60°C. |
| Outputs | RS485 Modbus, 0–10 V or 4–20 mA; two channel interface determined by variant. |
| Power | RS485 9–35 VDC / 24 VAC ±20%; voltage models 12–35 VDC; current supply set by load. |
| Enclosure | IP65 and optional display, 4–20 mA model without backlit display. |
Engineering note: RH accuracy applies to the stated central calibration condition, not to freezing or condensing duct air. Different passive RTD and digital variants have different temperature specifications; confirm the order suffix and duct location.
Official LEFOO model specification · examined 26 October 2026.