Continuous pH, EC & Temperature Monitoring for Nutrient Lines

The Bluelab Guardian Monitor Inline Wi-Fi provides continuous monitoring of pH, electrical conductivity (EC), and temperature directly within nutrient delivery lines. Designed for commercial growing systems, it helps growers maintain visibility into nutrient solution conditions without relying solely on manual spot checks.

Featuring pressure-rated inline probes, a clear LED display, and built-in Wi-Fi connectivity, the Guardian Monitor provides real-time measurements and configurable alarms. When connected to Bluelab Edenic, growers can access remote monitoring, measurement history, and alerts.

Key Features

Continuous Inline Monitoring

Measure pH, EC, and temperature directly within nutrient and irrigation lines.

Pressure-Rated Inline Probes

Inline probes support operating pressures up to 100 psi (7 bar).

Built-in Wi-Fi Connectivity

Connect to Bluelab Edenic for remote monitoring, alerts, and measurement history.

Customizable Alarms

Configure high and low alarms for pH, conductivity, and temperature.

Technical Specifications

The Bluelab Guardian Monitor Inline Wi-Fi continuously measures pH, conductivity, and temperature using pressure-rated inline probes installed directly into compatible nutrient delivery lines.

Measurement Specifications

Measurement	Range	Resolution	Accuracy
pH	0.0–14.0	0.1	±0.1
Temperature	0–50°C / 32–122°F	1°C / 1°F	±1°C / ±2°F
EC	0.0–5.0	0.1	±0.1
CF	0–50	1	±1.0
ppm 500 (TDS)	0–2500	10	±50
ppm 700	0–3500	10	±70

Measurement accuracy specifications are stated at 25°C / 77°F.

Monitoring & Connectivity

Continuous monitoring of pH, EC, and temperature.
Built-in Wi-Fi connectivity with the option to disable Wi-Fi.
Remote monitoring and measurement history through Bluelab Edenic.
Configurable high and low measurement alarms.
Mobile alarm notifications through Edenic when connected.
Plant-safe green LED display with adjustable brightness.
Non-volatile memory retains settings following power loss.
Replaceable inline pH probe with BNC connection.

Inline Probe Specifications

Maximum operating pressure: 100 psi / 7 bar
Inline pH probe connection: 3/4-inch NPT thread with included adapter for 1-inch NPT installations.
Conductivity/temperature probe connection: 1-inch NPT thread.
pH probe design: Replaceable, double-junction inline probe with BNC connector.

Operating Requirements

Operating temperature: 0–50°C / 32–122°F
Power input: 100–240 VAC, 50/60 Hz
Power output: 5 VDC, 1.5 A
Power connectors: Type A (USA), C (Europe), G (UK), and I (NZ) interchangeable connectors.
Manufacturer SKU: BGUNLN02

Manufacturer Warranty

Bluelab specifies a two-year limited warranty for the Guardian Monitor Inline Wi-Fi and a six-month warranty for the Bluelab pH Probe Inline. Coverage is subject to the manufacturer's warranty terms.

Installation Diagram

View the Bluelab Guardian Monitor Inline Wi-Fi installation diagram showing recommended probe positioning, nutrient line connections, and inline monitoring setup.

Bluelab Guardian Monitor Inline Wi-Fi installation diagram showing inline pH and conductivity probes and nutrient line connections

View Full Installation Diagram ↗

Installation Note: Follow Bluelab's installation instructions for correct probe positioning and plumbing connections. Additional fittings and installation components may be required and are sold separately.

Product Manual

Access the official Bluelab Guardian Monitor Wi-Fi care and user manual for installation, calibration, Wi-Fi setup, maintenance, and operation.

View Product Manual (PDF) ↗

Bluelab Guardian Monitor Inline Wi-Fi Overview

What's Included in the Box

The Bluelab Guardian Monitor Inline Wi-Fi package includes:

1 × Bluelab Guardian Monitor Inline Wi-Fi
1 × Bluelab pH Probe Inline with storage cap
1 × Bluelab Conductivity/Temperature Probe Inline
1 × Bluelab 3/4-inch to 1-inch NPT Adapter
1 × 5V DC Power Supply
Interchangeable Power Plug Adapters (USA, Europe, UK, AU/NZ)
4 × Mounting Screws
2 × Cable Ties
1 × Bluelab pH 7.0 Calibration Solution Sachet (18ml)
1 × Bluelab pH 4.0 Calibration Solution Sachet (18ml)
1 × Bluelab KCl Storage Solution Sachet (18ml)