GS2 EC PH Meter


The best EC and PH meter for your hydroponics, aquarium or industrial application.


EC PH Meter

EC PH meter from UbiBot provides more accurate EC / PH measurements with durable external probes. It monitors the PH value and electrical conductivity in the hydroponic nutrient solution, temperature and light continuously and in real time. Use this PH EC sensor to monitor your critical applications.

The Ubibot GS2 PH EC sensor is available in Wifi and SIM versions.

GS2 EC PH Meter Variations:

All variations include a 3m DS18B20 temperature probe (SKU DS18B20-3M-R-Audio).

  • GS2 Wifi connection only
    • GS2-1M-WiFi: includes 1m EC and PH probes
    • GS2-3M-WiFi: includes 3m EC and PH probes
    • GS2-8M-WiFi: includes 8m EC and PH probes
  • GS2 SIM and Wifi connection
    • GS2-1M-SIM: includes 1m EC and PH probes
    • GS2-3M-SIM: includes 3m EC and PH probes
    • GS2-8M-SIM: includes 8m EC and PH probes

GS2 EC PH Meter Specifications:

  • On-board Sensors: Ambient Light
    • Range: 0.01 to 83,000 lux
    • Accuracy: ±10%
  • Supported probes (included):
    • DS18B20 temperature probe
      • Range: -55 ℃ to ~125 ℃
      • Accuracy: ±0.5 ℃
    • PH
      • Range: 0 – 14 PH
      • Accuracy: ±0.1
    • EC
      • Range: 2-20,000 μs/ cm
      • Accuracy: ±2 F.S
  • On-Board Memory: 300,000 sensing records
  • Display: 4.4 inch LCD with backlight
  • Ports:
    • 1 x USB C
    • 1 x 3.5 mm Audio (DS18B20)
    • 1 x EC
    • 1 x PH
  • Power supply:
  • Standby time with on-board battery:
    • WiFi (8-12 months)
    • SIM (3-6 weeks)
  • Network connection:
    • WiFi (2.4GHz channels 1-13)
    • Mobile/ 4g
  • Dimensions: 55mm x 90mm x 152mm
  • Weight (without batteries): 143g


  • Hydroponic farms
  • Aquariums
  • Sewage treatment
  • Laboratories
  • Water treatment
  • Food production

GS2 PH EC sensor Calibration:

When the PH EC temp meter is connected to external power supply, PH readings may fluctuate slightly.

To achieve high accuracy, we recommend to calibrate the EC and PH probes before use.

Ubibot IoT Platform, App and Alerts:

The GS2 EC PH meter automatically synchronizes data with a WiFi or SIM connection (model dependant) to the Ubibot IoT Platform. You have remote access to your data via UbiBot App or Web Console platform on a PC anywhere in the world and allowing you to receive alerts via voice, email, SMS and the App, and monitor the environment in real time.

The Ubibot IoT Platform is compatible with IFTTT, Alexa, Google Assistant, Google Sheets.


  • 3m and 8m probes can be purchased separately. Please Contact Us to purchase these longer probes
  • Mounting instructions:
    • The GS2 has 2 holes on each side of the case
    • Use screws or bolts to mount the GS2
    • Alternatively use two (2) of the magnetic mounts to secure your GS2 to a steel surface.

Additional information