Features 1、This module can be applied to the buck field where the input voltage is higher than the output voltage, such as battery, power transformer, DIY adjustable power supply, industrial equipment step‑down. 2、With power indicator, 5A high power high efficiency step‑down low ripple 3、With heat sink and standoff for overheat protection and short circuit protection 4、With voltmeter display and the voltmeter can be self-calibrating 5、Using a more advanced voltage microprocessor, voltmeter error ± 0.05V, range 0 ~ 40V 6、Touch the button to switch the measurement input or output voltage, and the indicator light shows which voltage is being measured, and save the settings, even if it is powered off and then on. 7、The voltmeter can be turned off and easily tapped left side when you don not need it. 8、With terminal, no soldering iron is also convenient to use, and retain the wire bond point Specification Item Type: XL4015 Module Input Voltage: 4.0~38V (the input voltage must be 1.5V higher than the output voltage) Output Current: Up to 5A, recommended for use within 4.5A Output Power: Up to 75W Load Regulation Rate: S(I)≤0.8% Onboard Voltmeter Self-Calibration Method: Measured Efficiency Chart Input voltage Input Current The output voltage Output current Output Power Efficiency 36V 0.6A 5V 4A 20W 92.60% 36V 1.4A 12V 4A 48W 95.20% 36V 1.6A 18V 3A 54W 93.70% 36V 2.1A 24V 3A 72W 95.20% 24V 0.6A 3.3V 4A 13.2W 91.00% 24V 1.0A 5V 4.5A 22.5W 93.00% 24V 1.9A 9V 4.5A 40.5W 89.00% 24V 2.4A 12V 4.5A 54W 93.70% 24V 3.1A 18V 4A 72W 96.00% 12V 1.2A 3.3V 4A 13.2W 91.60% 12V 2.1A 5V 4.5A 22.5W 89.00% 12V 3.1A 7.4V 4.5A 33.3W 89.50% 12V 3.6A 9V 4.5A 40.5W 93.70% 5V 3.1A 3.3V 4A 13.2W 85.20% Package List 1 x Module 4 x Standoff 4 x Nuts 1 x Heat sink