The Bluelab Guardian Monitor WiFi helps you monitor your most important parameters (pH, conductivity and temperature) 24/7. The built-in Wi-Fi allows you to monitor the nutrient level of the plants from anywhere, at any time. The Bluelab Guardian Monitor is Wi-Fi powered and can be wall-mounted or hung on a bracket with two probes inserted into the tank. Instructions for use and more information can be found here.
Main characteristics
built-in Wi-Fi (with option to disable)
high/low pH, temperature and conductivity alarms
non-volatile memory (retention of settings during power failure)
plant-friendly green LEDs with adjustable display brightness