Features System voltage: DC12V Controller self-consumption power: 10MA Rated charging current: 10A Maximum charging current: 16A Maximum open circuit voltage of solar cell: 25V/36V Working temperature: (-20- +50)< /p> Product performance Short circuit protection Overcharge protection Overcharge and over-discharge protection < p>Undervoltage protection Charge anti-reverse, connection protection anti-reverse Instructions Open the top cover of the controller and connect as illustrated on the cover. 1. Correctly connect the "+" and "-" of the battery to the corresponding terminals of the controller (the third and fourth terminals from the left). 2. Correctly connect the "+" and "-" of the solar panel to the corresponding terminals of the controller (the first and second terminals from the left). 3. Correctly connect the "+" and "-" of the load to the corresponding terminals of the controller (the fifth and sixth terminals from the left). 4. The charging light is always on to indicate a strong charge; flashing indicates floating charge; no light indicates charging stopped. 5. When the load light is always on, it means there is output and the load can work; if it is off, it means there is no output and the load cannot work. 6. This product is used for lead-acid batteries, suitable for 17V solar panels, Precautions 1. Before connecting, please confirm whether the rated voltage of solar panel, battery and load is correct. 2. The rated current of the solar panel and the load should not be higher than the rated current of the controller.