The Solar Light Sensor needs voltage (+12VDC) to power it and it outputs a current which is passed through a resistor (3.8K R6) for the controller to measure the voltage that corresponds to the light level. There are 3 ways to do this, listed below ...
Why controller not showing a humidity reading (---%)and missing temperature reading (--.-F) on the display? There are two main ways your iGrow 800 controller could help you identify problems with your Indoor Temperature & Humidity Sensor. SENSOR ...
This article describes common sensor-related issues that may occur with the iGrow weather station and provides recommended actions to help restore accurate and reliable readings. One or More Sensor Readings Are Missing or Blank If a sensor value is ...