Renogy RNG-CTRL-WND30-LI Wanderer Li 30A 12V PWM Negative Ground Solar Charge Controller Solar Panel Regulator

The 10-amp Wanderer can accept up to 50-Volts D/C. However, please note that it can only accept 100-watts of solar input when charging a 12-volt battery bank.

No, the temperature sensor is to provide the correct voltage to the battery appropriate to the battery requirements at various temperatures. Battery charge voltages change as temperature changes.

It shows the panels voltage output while charging and also battery level.

That is how many amps the panel is currently putting out. Basically you could call it the strength of voltage displayed in amps.

No. The controller's purpose is to safely control the charging voltage and amperage delivered to the storage battery. The controller is powered by the battery, not the solar cell(s). The controller will stop charging when the battery is completely charged.

The controller does not give you an Amp hour reading on the display. It will give you voltage from solar panel and voltage of battery.

Controller does not function with very low voltage. Should not connect solar input when controller is not working.

USB port pulls from the battery! Actually all ports power off battery! Panels charge battery!