I am using this controller with two Kyocera KC85T (87 watt) solar panels on a small RV. I chose this controller mainly because I wanted the flexibility to mount the actual controller near the batteries and the meter in another location that was accessible for easily viewing. With a 20" cable for the remote meter, it made finding a good spot for the display easy.

This is a really great value for a controller with a remote display. The circuit board and components look to be of very high quality and it has a temperature compensation sensor that is included with the controller (most other manufacturers charge extra for this). It also has a 5 year warranty and 25 amp input capability.

I would easily give this controller 5 stars except for a few minor caveats. There is a four LED battery gauge next to the digital display that is supposed to give a quick view of the battery state. However the meter is calibrated very conservatively (Red = 12.2 volts, Yellow = 12.7 volts, # 2 Green = 13.2 volts # 1 Green = 13.7 volts). I wish there was a way to change the voltage settings. They do, however, provide a way to disable the LED's if you would prefer to only use the digital readout instead.

The display has two readout functions via a switch on the panel – battery volts and the other labeled “array current”. I figured that array current was a measure of how many amps were reaching the controller from the panels at any given point. However, I noticed that the amp reading drastically drops as the batteries near their float level voltage. Therefore, it appears that the amp reading on the meter will accurately measure the actual amps from the panels when the batteries are discharged. However, as the batteries approach full charge, the display actually shows the amps reaching the batteries as the controller scales back the charge current.

The only other thing worth mentioning regarding installation are the wire connections. The circuit board has well labeled heavy duty connectors that can accept up to #2 gauge wire. However the set screws that contact the wire are rather small so they actually can split #10 wire strands resulting in a bad connection and limiting full PV panel power from reaching the controller. The easy fix was using terminal ends on each of the wires, which I probably should have done in the first place.

All in all, I am very happy with this product. It is a good choice for smaller PV arrays and versatile & well made controller.

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