Input voltage: 5.5-30VDC (When the input voltage is 5V, voltage rise and fall can also be achieved, but the measurement of voltage and current is not accurate; when it is below 4.7V, undervoltage protection is applied) Output current: 0.2-3A adjustable, with enhanced heat dissipation up to 4A (please enhance heat dissipation when the module temperature exceeds 65 degrees). Equipped with a constant current indicator light, the output power should not exceed 35W or the current should not exceed 4A when outputting at low voltage. Overloading and burning are not guaranteed! Voltage display resolution: 0.05V Output voltage: 0.5-30VDC adjustable Current display resolution: 0.005A, Manufacturer: Akfldms