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Bluelab Guardian Monitor
The Bluelab Guardian Monitor Wi-Fi provides continuous, accurate readings of your nutrient solution’s pH, EC, and temperature, giving growers total visibility into their system’s conditions at all times. Designed for precision hydroponic management, it eliminates the need for manual testing and ensures plants receive the optimal balance of nutrients.
With built-in Wi-Fi connectivity, growers can remotely view real-time readings and receive alerts via the Bluelab Edenic App for complete peace of mind. The bright, plant-safe LED display shows all three key parameters simultaneously, while adjustable high and low alarms provide instant feedback when readings move outside target ranges. Conductivity and temperature probes are factory-calibrated, and the pH probe is easily recalibrated for ongoing accuracy.
Built to last, the Guardian Monitor Wi-Fi operates from mains power with international plug options and can be wall-mounted or positioned conveniently near reservoirs. The previous non-Wi-Fi model has been discontinued; this updated version adds cloud connectivity for data access and improved grow management.

Continuous Monitoring
Real-time tracking of pH, EC, and temperature for accurate, hands-free nutrient management
Wi-Fi Connectivity
Monitor remotely and receive live notifications through the Bluelab Edenic App
Built to Endure
Rugged construction with global power compatibility, replaceable probes, and a bright, low-heat displayConstant, accurate nutrient and pH monitoring that keeps your grow dialled in 24/7 for maximum plant performance.
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Bluelab Guardian Monitor
Key Highlights
      
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Key Highlights
      - Simultaneously displays pH, conductivity (EC/CF/PPM), and temperature
 - Built-in Wi-Fi for remote monitoring via Bluelab Edenic App
 - High/low alarm settings for each parameter
 - Automatic temperature compensation
 - Green LED display safe for use around plants
 - Replaceable pH probe with calibration reminder
 - International power supply with interchangeable plugs
 - Continuous operation via 100–240 V mains power
 - 2-year limited warranty (6 months for pH probe)
 
Directions for Use
      
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Directions for Use
      - Mount the Bluelab Guardian Monitor Wi-Fi near your nutrient reservoir.
 - Connect the power supply and attach both the pH and conductivity/temperature probes.
 - Submerge probes in the nutrient solution ensuring full sensor contact.
 - Calibrate the pH probe using Bluelab pH 4.0 and 7.0 calibration solutions.
 - Connect to the Bluelab Edenic App for remote data viewing and alerts.
 - Adjust nutrient strength and pH as needed based on readings.
 - Clean probes regularly and store the pH probe in Bluelab KCl solution when not in use.
 
Technical Specifications
      
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Technical Specifications
      - Measurement Parameters: pH, EC, CF, ppm (500 & 700 scale), Temperature (°C/°F)
 - pH Range: 0.0 – 14.0
 - pH Resolution: 0.1
 - pH Accuracy @ 25°C / 77°F: ±0.1
 - Temperature Range: 0 – 50°C (32 – 122°F)
 - Temperature Resolution: 1°C (1°F)
 - Temperature Accuracy @ 25°C / 77°F: ±1°C (±2°F)
 - EC Range: 0 – 5.0 mS/cm
 - EC Resolution: 0.1 mS/cm
 - EC Accuracy: ±0.1 mS/cm
 - CF Range: 0 – 50
 - CF Resolution: 1
 - CF Accuracy: ±1
 - PPM 500 (TDS): 0 – 2500 ppm
 - TDS Resolution: 10 ppm
 - TDS Accuracy: ±50 / ±70 ppm
 - PPM 700: 0 – 3500 ppm
 - PPM 700 Resolution: 10 ppm
 - PPM 700 Accuracy: ±50 / ±70 ppm
 - Power Source: 100 – 240 VAC (50–60 Hz)
 - Warranty: 2-year limited (6 months for pH probe)
 - Box Contents
1 × Bluelab Guardian Monitor
1 × Conductivity/Temperature Probe
1 × pH Probe
1 × Bluelab pH Probe Holder with Suction Cup
2 × Cable Ties
4 × Mounting Screws
4 × Plug Adapters (AU, EU, UK, US)
1 × Bluelab pH 7.0 Calibration Solution (single-use)
1 × Bluelab pH 4.0 Calibration Solution (single-use)
1 × Bluelab KCl Storage Solution 
Resources
      
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Resources
      
Shipping & Returns
      
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Shipping & Returns
      We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at info@hydrooasis.com.au
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at info@hydrooasis.com.au.