Attributes

Brand	-
Category	Machinery & Equipment / Thermo-hygrometers
Origin	-
Model Number	CWS19
Display Type	LCD with Backlight
Communication Interface	RS485 (Modbus RTU)
Temperature Range	-20°C to +60°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
Installation Method	Wall-Mounted / DIN Rail
Protection Rating	IP54

6 reviews

Anonymous

Mar 19, 2026

Rating: 4/5

Good value industrial sensor

Does exactly what it says. The response time is quick enough for our HVAC control loop. Would have given 5 stars if the cable entry had a better strain relief mechanism.

Anonymous

Mar 14, 2026

Rating: 4/5

Accurate and reliable

Great sensor for the price. Calibration seems spot on when compared to our reference meter. Only minor issue is the mounting bracket could be slightly more robust, but it works fine on drywall.

Anonymous

Mar 12, 2026

Rating: 5/5

Easy setup with Modbus

As an automation engineer, I appreciate devices that just work. The Modbus register map is standard and documented well. Had it up and running in under 20 minutes.

Anonymous

Mar 12, 2026

Rating: 5/5

Excellent build quality

The casing feels very durable and professional. We are using this in a greenhouse environment where humidity is high, and it has performed flawlessly for two months so far.

Anonymous

Mar 10, 2026

Rating: 5/5

Perfect for our server room monitoring

We installed three of these units in our data center. The RS485 integration was seamless with our existing BMS system. The LCD display is clear and easy to read from a distance.

Anonymous

Mar 03, 2026

Rating: 5/5

Clear display and precise readings

Bought this for a pharmaceutical storage area. The precision meets our internal compliance needs, and the large digits on the screen make manual logging easy during audits.

5 FAQ

Q: What is the refresh rate of the LCD display?

A: The LCD updates approximately every 2 seconds to ensure stable readings while still providing near real-time data.

Q: Is the sensor probe replaceable if it drifts over time?

A: The sensor element is integrated into the main housing for better protection against dust and moisture. If calibration drifts significantly, the entire unit typically needs replacement or factory recalibration.

Q: Does it come with a DIN rail clip or is it wall-mount only?

A: The package includes a mounting bracket for wall installation. For DIN rail installation, an optional adapter clip is available separately or can be 3D printed using the dimensions in the manual.

Q: Does this device support multiple drop addresses on the same RS485 bus?

A: Yes, the CWS19 supports configurable Modbus addresses from 1 to 247, allowing multiple units to communicate on a single bus pair.

Q: Can this be powered by a standard 24V AC transformer?

A: No, the CWS19 requires a DC power supply between 12V and 24V. Please ensure you use a rectified DC source to avoid damaging the unit.

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