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Home / Thermo-hygrometers / Air Temperature and Humidity Sensor 485 Modbus Server Room Chassis Cabinet High-Precision DIN-Rail Hygrometer Module

Attributes

Brand -
Category Machinery & Equipment / Thermo-hygrometers
Origin -
Communication Protocol RS485 Modbus RTU
Mounting Type DIN-Rail (35mm)
Temperature Range -40°C to +80°C
Humidity Range 0% to 100% RH
Temperature Accuracy ±0.3°C @ 25°C
Humidity Accuracy ±2% RH @ 25°C
Power Supply DC 12V - 24V
Response Time < 8 seconds
Housing Material Flame-retardant ABS
Application Scenario Server Rooms, Cabinets, Industrial Control

6 reviews

A

Anonymous

Mar 29, 2026

Rating: 5/5

Easy integration

As an automation engineer, I appreciate the clear documentation for the Modbus register map. Connected easily to our PLC. Great value for the price point.

A

Anonymous

Mar 27, 2026

Rating: 5/5

High precision as advertised

Needed something reliable for a pharmaceutical storage unit. The humidity accuracy is impressive. It alerts us immediately if conditions drift outside the safe zone.

A

Anonymous

Mar 24, 2026

Rating: 4/5

Reliable but wiring could be clearer

The sensor works great now, but the terminal labeling on the device itself is a bit small. Had to use a magnifier to ensure correct wiring. Performance since then has been flawless.

A

Anonymous

Mar 22, 2026

Rating: 4/5

Solid industrial sensor

Good build quality and the DIN-rail clip is very secure. Setup required some tweaking of the baud rate settings, but once configured, it has been running without issues for two months.

A

Anonymous

Mar 20, 2026

Rating: 5/5

Essential for climate control

Using this to monitor a wine storage cellar. The consistency of the readings gives me peace of mind. The compact size fits perfectly in the electrical box without taking up much space.

A

Anonymous

Mar 05, 2026

Rating: 5/5

Perfect for our server rack monitoring

We installed three of these units in our main data center cabinets. The Modbus integration with our existing SCADA system was seamless. Readings are stable and match our handheld calibration tools perfectly.

5 FAQ

Q: Does this sensor support multiple drop connections on the same RS485 bus?

A: Yes, the device supports multi-drop networking. You can connect up to 32 devices on the same bus, provided each has a unique Modbus address configured.

Q: What is the default baud rate out of the box?

A: The default factory settings are 9600 baud, 8 data bits, no parity, and 1 stop bit (9600-8-N-1). These can be changed via software commands if your system requires different settings.

Q: How do I reset the device if I forget the Modbus address?

A: There is a hardware reset procedure involving holding the configuration button while powering up the unit. Please refer to page 12 of the user manual for the specific LED blink sequence instructions.

Q: Can I power this with a standard 24V AC supply?

A: No, this module requires a DC power supply between 12V and 24V. Connecting it to an AC source may damage the internal electronics. Please ensure you use a rectified DC source.

Q: Is the housing rated for outdoor use or high humidity environments?

A: While the sensor measures up to 100% RH, the housing is designed for indoor industrial use like server rooms or cabinets. It is not IP67 rated for direct exposure to rain or submersion.

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