DC-DC 4.5-32V do 1-30V Buck Regulator Converter Power Module Description: DC-DC high power 12A converter controller module for controller/charger. DIY adjustable power supply with constant current function, not afraid of short circuit during use, can protect the load. Power up your electronic devices. For different batteries, set the charging voltage and charging current depending on the battery with different voltage and capacity. Powered by solar panels do different batteries, with constant current function, can prevent the battery from overcharging, effectively protect the battery. Drive high, freely combine in series and in parallel. As a power supply, power phone or various digital products. Constant voltage regulator DC current regulator Overcurrent protection. Specification: Module Type: Non-insulated Buck Module Input Voltage: 4,5-32 V Output voltage: smooth adjustment 1-30 V Output DC range: 0.3-12A (default 3A) Operating temperature: -40 85 Operating Frequency: 380KHz Conversion efficiency: 97 percent Short Circuit Protection: Y Overheating Protection: Y Input Connection Protection: Y Size: 70x52x50mm/2.75x2.04x1.96 inch The package includes: 1 piece buck converter module