A
Anonymous
Mar 30, 2026
Rating: 4/5
Good value
Solid sensor for the price. Calibration took a little time to get right but once set, it holds well.
Description
Conductivity Transmitter EC/TDS Sensor Module RS485 4-20mA Output for Online Water Quality Monitoring
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Communication Protocol | RS485 Modbus RTU |
| Analog Output | 4-20mA / 0-5V / 0-10V Selectable |
| Power Supply | 12-24V DC |
| EC Measurement Range | 0-2000uS/cm, 0-20mS/cm |
| TDS Measurement Range | 0-1000ppm, 0-10000ppm |
| Measurement Accuracy | ±1.5% Full Scale |
| Operating Temperature | 0°C to 60°C |
| Protection Rating | IP68 Waterproof |
| Sensor Cable Length | 2 Meters (Standard) |
| Housing Material | Enhanced ABS Plastic |
5 reviews
A
Anonymous
Feb 22, 2026
Rating: 4/5
Reliable
Readings are consistent. Would prefer a longer cable option out of the box, but extensions work fine.
A
Anonymous
Feb 13, 2026
Rating: 5/5
Easy Integration
Modbus documentation was clear. I had it up and running with my Arduino setup in under an hour.
A
Anonymous
Feb 02, 2026
Rating: 5/5
Excellent for Hydroponics
Works great with my nutrient monitoring system. The RS485 output is stable and easy to read with my PLC.
A
Anonymous
Jan 28, 2026
Rating: 5/5
Robust Build
Using this in a wastewater pre-treatment setup. It has withstand the environment well for 3 months now.
5 FAQ
Q: What is the power consumption?
A: The module consumes less than 2 Watts during normal operation.
Q: Is the probe replaceable?
A: Yes, the sensor probe uses a standard interface and can be replaced separately from the transmitter module.
Q: Can I extend the sensor cable?
A: Yes, the cable can be extended up to 10 meters total without significant signal loss.
Q: Is this compatible with Siemens PLCs?
A: Yes, it supports standard Modbus RTU which is compatible with most Siemens S7 series PLCs.
Q: How often should I calibrate this sensor?
A: We recommend calibration every 3 to 6 months depending on the usage environment and solution chemistry.
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