5PCS Solar Charge Controller Auto Light Control Circuit Switch Lithium Batter…
(Lithium battery): 3.6V-16.8V (1S-4S);. The LED lamp beads can not be used directly and need to be driven by a step-down drive or a series current limiting resistor. If you need to close at night or transport storage The switch interface SW has been reserved, and the opening can be installed by cutting.