1、The LCD can display voltage input and output, output current, output power, output capacity, and output time. 2、Numerical control adjustment is accurate and fast, can increase and decrease voltage, output voltage can be adjusted arbitrarily from 0.5-30V, and limit current can be adjusted arbitrarily from 0-4A. 3、The input terminal is protected against reverse connection, and the reverse connection will not burn. 4、The output terminal is anti-backflow, and there is no need to add an anti-backflow diode when charging the battery. 5、The module can be set to turn on/off by default, with low output ripple and π-type filtering. 6、After the module's working parameters exceed the protection threshold, the output will be automatically turned off, the heat sink is thickened, and the heat dissipation effect is good 1 x Boost Power Supply Module Item Type: Boost Power Supply ModuleModel: ZK-4KXMain Material: ABS+AluminumInput Voltage: 5.5-30VOutput Voltage: 0.5-30VOutput Current: Can work stably at 3A for a long time, and can get 4A with enhanced heat dissipationOutput Power: Natural heat dissipation 35W, enhanced heat dissipation 50WVoltage Display Resolution: 0.01VCurrent Display Resolution: 0.0- 0.4AConversion Efficiency: About 88%Soft Start: Yes (it may fail when the module with high power load is started)Protection Mechanism: Input anti-reverse connection;Output anti-backflow;Input Undervoltage Protection: 4.8-30V adjustable, default 4.8VOutput Overvoltage Protection: 0.5-31V adjustable, default 31VOutput Overcurrent Protection: 0 - 4.1A adjustable, default 4.1AOutput Over Power Protection: 0 -50W adjustable, default 50WOver Temperature Protection: 80-110℃ adjustable, default 110℃Timeout Protection: 0 -100h adjustable, closed by defaultOver-capacity Protection: 0 -60Ah adjustable, closed by defaultWorking Frequency: 180KHZLWH: Approx. 79 x 43 x 26mm / 3.1 x 1.7 x 1inPanel Cut-Out Size: Approx. 71 x 39mm / 2.8 x 1.5in