Solar Probe
 The iNetGrow solar probe measures relative light levels using a scale of 1-100. The solar probe is especially useful in determining irrigation schedules. The Apopka Controller may be programmed using light levels to help setup watering frequency and times. By adding a smart temperature probe, a very precise irrigation scheme can be implemented. Maximum irrigation on hot sunny days, less watering on sunny cold days, and little or no irrigation on cold cloudy days.

The solar probe plugs into all of the E and most of the G series modules, allowing light levels to be measured at a very low cost in any application.