There were no instruction with this unit and almost nothing on the web.
Connect your battery to the appropriate +screws indicated by the battery symbol and connect your solar panel to the appropriate +screws indicated by the panel symbol.
Do Not connect your load device to the screws indicated by the light bulb symbol because they will not power the device. Connect your load device straight to the battery along with the charge controller battery wires.
I am fairly confident that the controller protects the battery from being over charged because my deer feeders and game cameras have both worked flawlessly with the same battery for years. I have 4 of these units and I had one of the 4 fail to pass the charge from the solar panel after about 4-5yrs. I replaced it with exactly the same unit last year from AmazonThis unit while it does seem to work as a solar controller, there is no indicator LED to show it is working even though there is a place in the front panel that says "Charging" (it's just a hole with no light indicator). The "LOAD" section is completely inoperative and even if you connect a light source, it will not work let alone come on automatically at night. I have confirmed this with the seller. So, I purchased a better one on ebay (he's an electronics engineer and will make it to your specifications). I used the enclosure from this one to house the new one. Yes, I am out $13 bucks but the seller did offer an RMA, but I wanted the plastic enclosure as I mentioned before. So it all worked out for me.
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