1. LCD can input / output voltage, output current / output power / output capacity / output time; 2. CNC adjustment, accurate and fast, can boost and lower voltage, output voltage can be adjusted at of 0.5-30v, limit current 0-4a can be adjusted at ; 3. Anti-reverse connection protection from input end, which not burn; 4. Anti-reverse irrigation on the output, no additional anti-reverse irrigation diode is required to charge the battery; 5. Multiple software protection mechanisms are available, and the protection threshold is adjustable. When the working parameters of the module exceed the protection threshold, the output be closed automatically. Input voltage: 5.0-30 v Output voltage: 0.5-30 v Output current: can work stably at 3A for a long time, and can reach 4A under improved heat dissipation Output power: natural heat dissipation 35 W, enhance heat dissipation 50 W Voltage screen resolution: 0.01 V Current display resolution: 0.001A Conversion efficiency: about 88% Size: 7.9 x 4.3 x 2.6cm Material: ABS+ metal Colour: gray Package Contents: 5 module Only the above package content, other products are not included. Note: Light reflection 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.