These are PWM (Pulse Width Modulation) charge controllers which take panels with an Open Circuit Voltage of up to 48V, so they work with our panels.
We would highly recommend using our MPPT charge controllers rather than these, but we offer these as they are a cheaper alternative if you are on a tight budget. You will get less power per panel from these chargers than the MPPT ones.
We did a side by side test between MPPT & PWM controllers, read the results here
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