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Home / Thermo-hygrometers / Temperature and Humidity Transmitter Hygrometer High Precision Industrial Waterproof Indoor/Outdoor 4-20mA Sensor

Attributes

Brand -
Category Machinery & Equipment / Thermo-hygrometers
Origin -
Output Signal 4-20mA Current Loop
Measurement Range (Temp) -40°C to +80°C
Measurement Range (Humidity) 0% to 100% RH
Accuracy (Temperature) ±0.3°C at 25°C
Accuracy (Humidity) ±2% RH (10%-90% RH)
Protection Rating IP65 Waterproof
Power Supply 12V DC to 24V DC
Response Time < 15 seconds
Housing Material ABS Engineering Plastic
Application Environment Indoor and Outdoor Industrial

6 reviews

A

Anonymous

Mar 31, 2026

Rating: 5/5

Best sensor in this price range

Replaced an older brand with this JianDa RenKe model. The response time is noticeably faster, especially when humidity changes rapidly. Highly recommend for HVAC control systems.

A

Anonymous

Mar 10, 2026

Rating: 4/5

Solid industrial grade sensor

Very robust build quality. It has been running outdoors in the rain for three months without any issues thanks to the IP65 rating. The only minor downside is the cable length could be slightly longer.

A

Anonymous

Mar 07, 2026

Rating: 5/5

High precision as advertised

Compared this against a certified lab reference meter and the deviation was negligible. Excellent value for money for industrial applications where reliability is key.

A

Anonymous

Mar 04, 2026

Rating: 4/5

Reliable data logging source

We feed this into a data logger for compliance reporting. The signal is clean with very little noise. Would give 5 stars if it came with a mounting bracket included, but overall very satisfied.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Easy installation

Wiring was straightforward. The terminal block is well labeled. We use it to monitor humidity in a greenhouse and it handles the high moisture environment without condensation issues inside the unit.

A

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect for our warehouse monitoring

We installed six of these units across our distribution center. The 4-20mA output integrates seamlessly with our existing PLC system. Readings are stable and match our handheld calibration tools perfectly.

5 FAQ

Q: Can this sensor be used directly in a submersible application?

A: No, while it has an IP65 rating which protects against water jets and heavy rain, it is not designed for continuous submersion underwater. Please ensure it is mounted in a location where it will not be fully submerged.

Q: What is the maximum cable length recommended for the 4-20mA signal?

A: For a standard 24V power supply, you can typically run the cable up to 500 meters without significant signal loss, depending on the wire gauge and total loop resistance. Always calculate your specific loop load.

Q: Does this unit require regular calibration?

A: The sensor is factory calibrated. For critical industrial applications, we recommend verifying accuracy once a year. If drift is detected, the unit can be recalibrated using the internal trim pots or via software if your model supports digital adjustment.

Q: Is the housing resistant to UV degradation for outdoor use?

A: Yes, the ABS housing is treated with UV stabilizers to prevent cracking or fading when exposed to direct sunlight for extended periods, making it suitable for long-term outdoor installation.

Q: Can I connect multiple sensors to the same controller input?

A: No, each 4-20mA input on your controller should correspond to one sensor. Connecting multiple current-loop sensors in parallel to a single input will result in incorrect readings. You need a separate input channel for each transmitter.

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