Features 1、This is a 5A high power high efficiency DC-DC buck module with low ripple and converts 4.0V~38V to 1.25V~36V 2、The voltmeter on board can be self calibrated; using more advanced voltage microprocessor, voltmeter error is ±0.05V, measuring range of 0~40V 3、Input and output have screw terminals for convenient connection even with no soldering iron, and keep solder pad for soldering connection 4、It supports overheating protection and short circuit protection function 5、Comes with heat sink for better heat dissipation, and several standoffs and nuts Specification Features: This is a 5A high power high efficiency DC-DC buck module with low ripple and converts 4.0V~38V to 1.25V~36V. Input and output have screw terminals for convenient connection even with no soldering iron, and keep solder pad for soldering connection. It supports overheating protection and short circuit protection function. Comes with heat sink for better heat dissipation, and several standoffs and nuts. Specifications: Input Voltage: 4.0V~38V (input voltage should be at least 1.5V higher than the output voltage) Output Current: Max. 5A(4.5A or less is suggested) Max. Output Power: 75W Size: 60*36*18mm/2.36*1.41*0.7" Voltmeter Self-calibration Instruction: Package Includes: 1 x Step Down Module 1 x Heatsink 4 x Standoffs and Nuts Package List