Module Name: 12A Buck Perfect VersionInput Voltage: 4.5-30v input Voltage do not exceed 30V!Output Voltage: 0.8-28V(adjustable) Output must be lower 2V input.Output Current: 0-12A 100W enhance heat dissipation of up to 200W.Operating temperatur: -40 to +85 degrees.Opetating frequency: 300KHZConversion efficiency: up to 95%(efficiency of input and output voltage、 current、 pressure related)Short circuit protection: yes( limit current 14A) Try best not to short circuit.Overtemperature protection: (automatically shut off the output after overtemperature)Input Reverse Polarity Protection: No (if necessary please enter the string into the diode)Installation: 4 pcs of 3mm screws.Connection: Terminals、 solderless、 V-IN is the input、 V-OUT is the output、 with the housing module wire output.Module dimensions: L60mm * W 51mm* H22mm Applications:This module can be applied in the field of blood pressure is higher than the output voltage of the input voltage、 such as batteries、 power tranformers、 DIY adjustable power supply、 24V car Led buck power supply、 automotive LED lights with power、 industrial equipment buck、 12V turn 3.3V、 12V turn 5V、 24V turn 5V、 24V turn 12V、 etc.Package Weight: 0.195kg (0.43lb.)Package Size: 48cm x 38cm x 28cm (18.90in x 14.96in x 11.02in)