The Bluelab Guardian Monitor with a water-resistant design has an adjustable brightness display with large easy-to-read, plant-safe green LED displays.
There are selectable values for conductivity and temperature with a simple push button pH calibration system. No calibration required for conductivity and temperature.
This monitor comes with temperature compensation, an international power supply, and there is a silent alarm is for both high and low settings, settings that are retained when power is lost (non-volatile memory).