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% 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 4.8V Output Overvoltage Protection: 0.5-31V adjustable, default 31V Output Overcurrent Protection: 0 -4.1A adjustable, default 4.1A Output Over Power Protection: 0 -50W adjustable, default 50W Over Temperature Protection: 80-110 adjustable, default 110 Timeout Protection: 0 -100h adjustable, closed by default Over-capacity Protection: 0 -60Ah adjustable, closed by default Working Frequency: 180KHZ LWH: Approx. 79 x 43 x 26mm / 3.1 x 1.7 x 1in Panel Cut-Out Size: Approx. 71 x 39mm / 2.8 x 1.5in