Vital ParametersNumerical 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. LCD DisplayThe LCD can display voltage input and output, output current, output power, output capacity, and output time. The input terminal is protected against reverse connection, and the reverse connection will not burn. ProtectionAfter 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. High PerformanceThe output terminal is anti-backflow, and there is no need to add an anti-backflow diode when charging the battery. The module can be set to turn on/off by default, with low output ripple and -type filtering. Item Type: Boost Power Supply Module Model: ZK-4KX Main Material: ABS+Aluminum Input Voltage: 5.5-30V Output Voltage: 0.5-30V Output Current: Can work stably at 3A for a long time, and can get 4A with enhanced heat dissipation Output Power: Natural heat dissipation 35W, enhanced heat dissipation 50W Voltage Display Resolution: 0.01V Current Display Resolution: 0.0-0.4A Conversion Efficiency: About 88% Package List:1 x Boost Power Supply Module