Bluelab Guardian Monitor

In just one glance it measures all three critical parameters for successful growth pH, conductivity and temperature.

• Adjustable brightness display.
• Large easy to read, Plant Safe green LED displays.
• Selectable values for conductivity and temperature.
• Simple push button pH calibration system.
• No calibration required for conductivity and temperature.
• Silent alarm for both high and low settings.
• Settings retained when power lost (non-volatile memory).
• Temperature compensation.
• An international power supply.
• Water resistant design.
• 2 year warranty (6 months on probe).