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The Atlas Scientific EZO Conductivity Circuit is a compact embedded module for reading electrical conductivity, total dissolved solids, salinity, and seawater specific gravity. It is a great choice for water quality systems, hydroponics, aquaponics, lab builds, dosing systems, and automated monitoring projects.
This circuit gives your Arduino, Raspberry Pi, ESP32, or custom controller access to reliable conductivity data without building the analog sensing circuit from scratch. It supports both UART and I2C, making it flexible for simple projects and multi-sensor systems.
Why You’ll Like It
- Reads EC, TDS, salinity, and seawater specific gravity
- Works with UART or I2C communication
- Wide conductivity range for different water testing needs
- Supports temperature compensation for better readings
- Small size, ideal for embedded water monitoring builds
- Works with many conductivity probes from K 0.01 to K 10.2
What You Can Build
- Hydroponics nutrient monitoring systems
- Aquaponics and aquarium water quality monitors
- Drinking water and process water test devices
- Salinity monitoring projects
- Automated dosing and control systems
- Arduino or Raspberry Pi data logging stations
Recommended Add-ons
- Atlas Scientific conductivity probe
- Conductivity calibration solution
- Electrically isolated EZO carrier board
- Arduino, ESP32, or Raspberry Pi controller
- Jumper wires or I2C wiring accessories
Technical Specifications
| Product | Atlas Scientific EZO Conductivity Circuit |
| SKU / Model | EZO-EC |
| Reads | Conductivity, TDS, salinity, and seawater specific gravity |
| Conductivity Range | 0.07 to 500,000+ μS/cm |
| Accuracy | ±2% |
| EC Reading Time | 600ms |
| Supported Probes | K 0.01 to K 10.2 conductivity probes |
| Calibration | 2 or 3 point calibration |
| Temperature Compensation | Supported |
| Data Protocol | UART and I2C |
| Default I2C Address | 100 / 0x64 |
| Operating Voltage | 3.3V to 5V |
| Data Format | ASCII |
| Dimensions | 13.97mm x 20.16mm |
| Weight | 1.77g |
Pinout & Power Notes
The EZO Conductivity Circuit can be used with 3.3V or 5V systems. Use I2C when adding several EZO circuits on one controller, or use UART for a direct serial setup. For the most stable readings, use proper calibration solutions and pair the circuit with the correct conductivity probe for your water range.
What’s in the Box
- 1 x Atlas Scientific EZO Conductivity Circuit
FAQ
Can this measure TDS?
Yes. It can read total dissolved solids in ppm when used with a compatible conductivity probe.
Can I use this with Arduino?
Yes. It can communicate through UART or I2C, so it can work with Arduino and other microcontrollers.
Can I use this with Raspberry Pi?
Yes. It can be used with Raspberry Pi through supported UART, I2C, or USB setups.
Do I need calibration solution?
Yes. Calibration is recommended for more accurate EC, TDS, and salinity readings.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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