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Bluelab

Bluelab Guardian Monitor Wi-Fi for Real-Time Monitoring

  • 3-in-1 meter: pH, temperature and conductivity (TDS)
  • Real-time readings over Wi-Fi
  • Wall mount design
  • 51 degrees C upper temperature range
  • Plus or minus 1 degree C temperature accuracy

Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A wall-mounted three-in-one monitor that reports pH, temperature and conductivity over Wi-Fi for hydroponic and indoor growing. The listing says little about probes, power or pH accuracy.

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ASIN: B0CCQ3SHBWModel: 5003Category: pH Meters

Styles Available

Connect (2nd Gen)Guardian Monitor Connect In-lineWi-Fi (with Inline Probes)Wi-Fi (with Standard Probes)

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Overview

A hydroponic grower gets continuous readings of pH, temperature and conductivity from this Bluelab Guardian Monitor, which mounts on a wall and reports over Wi-Fi. It is a digital meter built for indoor grow setups.

Watching the nutrient solution in real time without standing at the reservoir is the reason to consider it, since one unit covers three measurements. The limitation is how little the listing explains, with probes, power and calibration all unspecified.

Who it's for

Growers running a reservoir who want to check the solution from a phone or screen will find continuous monitoring useful. Hobbyists wanting a pocket tester or a complete probe kit should look at a different product.

Pros and cons

Pros
  • Three measurements in one unit
  • Real-time readings over Wi-Fi
  • Stated temperature accuracy
  • Built for indoor grow setups
Cons
  • Probes and power details not listed
  • PH accuracy unstated
  • Wi-Fi setup steps missing

Performance notes

Constant sensing means the display and the network feed show changes as they happen rather than at a spot check. Temperature is reported within the stated accuracy up to the upper range limit. How well pH and conductivity track depends on the probes and on calibration, which the listing does not describe.

Where it stands among ph meters

  • #6 most-searched brand and model of the 8 ph meters lines we track (by search demand, not sales).

From the specs of the 15 ph meters we list; not a test result.

Specifications

BrandBluelab
Model5003
Capacity & performance
Temperature accuracyPlus or minus 1 degree C
Upper temperature range51 degrees C
Compatibility & installation
ConnectivityWi-Fi
MountingWall Mount
Other details
Part NumberBGUSTD02
MeasurementspH, temperature, conductivity (TDS)

Frequently asked questions

How do I install the Bluelab Guardian Monitor?

It is a wall mount unit. The listing does not describe the mounting hardware, the probes or the Wi-Fi setup steps.

Does the Bluelab Guardian Monitor measure nutrients?

It reports conductivity, shown as TDS, along with pH and temperature.

Is the Bluelab Guardian Monitor a handheld meter?

No. It is a wall mounted monitor for continuous readings.