A
Anonymous
Mar 19, 2026
Rating: 5/5
Robust Build Quality
The housing feels durable. Been running outdoors under a shelter for months without issues.
Description
Temperature and Humidity Transmitter Modbus SHT20 Sensor Module, High Precision RS485 Monitoring
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Sensor Chip | SHT20 Digital Sensor |
| Communication Protocol | Modbus RTU over RS485 |
| Temperature Range | -40°C to +85°C |
| Humidity Range | 0% to 100% Relative Humidity |
| Temperature Accuracy | ±0.3°C at 25°C |
| Humidity Accuracy | ±2% RH at 25°C |
| Operating Voltage | 5V DC to 24V DC |
| Response Time | Less than 8 Seconds |
| Protection Rating | IP65 Protected Housing |
| Cable Length | 2 Meters Shielded Cable |
5 reviews
A
Anonymous
Feb 19, 2026
Rating: 5/5
Excellent Greenhouse Sensor
Using this for climate control in my greenhouse. Humidity readings help automate the misting system perfectly.
A
Anonymous
Feb 14, 2026
Rating: 5/5
Perfect for Industrial Logging
Integrated this into our warehouse monitoring system. The Modbus implementation is stable and readings are consistent.
A
Anonymous
Feb 09, 2026
Rating: 4/5
Good Module, Minor Wiring Note
Works great once wired correctly. Make sure to check A and B polarity on your RS485 converter.
A
Anonymous
Jan 23, 2026
Rating: 5/5
Accurate and Reliable
Compared readings with a calibrated handheld device. The variance was negligible. Highly recommend for precision tasks.
5 FAQ
Q: How do I read the data registers?
A: Please refer to the manual in the package. Temp is usually register 0x0000 and Humidity is 0x0001.
Q: Does it support 3.3V logic?
A: The sensor chip does, but the module is designed for 5V-24V DC input for stable transmission.
Q: Can I connect multiple sensors on one bus?
A: Yes, RS485 supports multi-drop. Ensure each unit has a unique Modbus address.
Q: What is the default Modbus address?
A: The default slave ID is 1. It can be reconfigured using our setup software.
Q: Is the cable shielded?
A: Yes, the included 2-meter cable is shielded to reduce interference in industrial environments.
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