1. DIY a voltage Regulator, with constant current function, Short-circuit proof, can protect the load. 2. It can power supply for electronic devices. 3. Charging indicator: charging red, bright green when fully charged. Turn lamp is the output current detection. 4. charger for all kinds of batteries, with MPPT function, can enhance the charging current to double. With a constant current and prevents battery overcharge, effective protection of the battery. 5. it can support high-power LED. As a car power supply , it can for your cell phone or digital products supply. 1. Module Name: 5A buck constant voltage constant current MPPT 2. Module Properties: Non-isolated buck module (BUCK) 3. Input voltage: 6-36V 4. Output voltage: 1.25-32V continuously adjustable (the default output 5V). MPPT voltage setting range: 6-36V 5. Output current range: 0.05-5A (The default output current is 3A) 6. Turn lights output range: 0.01-5A (default turn lamp current 0.3A) 7. Operating temperature: -40 to + 85 degree 8. Operating frequency: 180KHz 9. Conversion efficiency: up to 95% (efficiency, input & output voltage, current and pressure-related) 10. Over temperature protection: (automatically shut off the output after overtemperature) 11. Input reverse polarity protection: None, (if necessary, please add the string into the diode) 12. Output anti-anti-irrigation protection: no, the output must be connected to the battery plus blocking diode, otherwise it will burn the module 13. Installation: 4 pcs 3mm screws 14. Connection: IN is the input, OUT is output 15. Module dimensions:60 x 31 x 22 mm(without meter) Note: Detection module, please do not direct connect the output of negative electrode and the input of negative electrode colour:Blue Material:plastic size:60 x 31 x22mm Package Contents: 1 x Digital Solar Panel Controller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.