DC-to-DC Module, DC-DC Converter Voltage Regulator Step Down Module Protective Function: The DC-DC converter supports overheating protection and short circuit protection function, comes with heat sink for better heat dissipation Easy Installation: The module has input and output have screw terminals for convenient connection even with no soldering iron, and keep solder pad for soldering connection, also has several standoffs and nuts Superior Performance: The power step-down module is a 5A high power high efficiency DC-DC module with low ripple and converts 4.0V~38V to 1.25V~36V Self Calibrated: The step down voltage module voltmeter on board can be self calibrated; using more advanced voltage microprocessor, voltmeter error is 0.05V, measuring range of 0~40V color: blue Size: 66*39*18mm Quantity: 1pc Kind tips: 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding. 3. Only the above package contents, excluding other products.