Input voltage: 53-32V (minimum input of 4V to achieve step-down, but the voltage and current measurement is not accurate when the input is lower than 53V); Output voltage: 12-32V (The input voltage must be higher than the output voltage, the minimum differential voltage is 08V)Output current: can work stably at 8A for a long time, and can reach 12A under enhanced heat dissipation; Output : natural heat dissipation 120W (within 8A), enhanced heat dissipation 160WSafe Protection: the volt conversion board is with reverse connection protection at input terminal, reverse connection will not burn; short circuit protection.Application: the supply can be used as an ordinary buck module with over-current protection; used as a battery charger; used as a high- LED constant current driver module.Button Control: button control output voltage ON / OFF status, and you can set the default output state is ON or OFF of the time -on.Color: picture colorMaterial: electronic componentsVoltage display: resolution 005V, range 0-32VCurrent display: resolution 001A, range 0-12AConversion efficiency: about 96%Working current: about 25mASoft start: Yes ( with load module may fail when starting)Input reverse connection protection: YesOutput anti-backflow: no (if charging the battery, first on the module and then connect the battery, and that the battery voltage is lower than the output voltage; if there are conditions, please connect the anti-backflow diode in the output positive pole)Short circuit protection: YesSize: length * width * height 82 * 52 * 32mmWeight: 80gAttentions: 1. Module input IN- cannot short circuit with output OUT-, otherwise constant current function will be invalid.2. Please make that the of e supply is greater than the required by the output load. Please reduce the when the module is extremely hot.Package Including: 1* Step-down module boardOnly 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.