Part number:Ejoyousr8s430oyi9 Item Weight:32 g Product Dimensions:7 x 4 x 2 cm; 32 Grams Item Package Quantity:1 Batteries included?:No Batteries Required?:No Specifications:Input Voltage: 4.0V~38V (input voltage at least 1.5V higher than the output voltage) Output Voltage: 1.25V~36V (continuously adjustable) Output Current: Max. 5A(4.5A or less is suggested) Max. Output Power: 75W Max. Efficiency: 96% (Efficiency is related to input/output voltage, current and voltage difference) Load Regulation S(I): 0.8% Voltage Regulation S(u): 0.8% Size: 60*36*18mm/2.36*1.41*0.7" Voltmeter Self-calibration Instruction: 1. When the voltmeter on board displays output voltage, press and hold the right button for 2 seconds to enter output voltage regulation mode, and the voltmeter display and output voltage indicator light synchronously flash.Similarly, when the voltmeter on board displays input voltage, press and hold the right button for 2 seconds to enter input voltage regulation mode, and the voltmeter display and input voltage indicator light synchronously flash. 2. Press the right button to increase voltage value, and left button to reduce voltage value.Due to a unit of voltage is less than 0.1 V, so you need to press button for 1 time~5 times to see the voltage value changes 0.1V. 3. After voltage adjustment, press and hold the right button for 2 seconds then release to exit voltage calibration mode. All the parameters set up will be automatically saved if power failure. Note:To ensure that the voltage meter accuracy, please make sure that the input voltage is above 4.5V Package Includes:1 x Step Down Module1 x Heatsink4 x Standoffs and Nuts [Specification]:Input voltage: 4.0V~38V; Output voltage: 1.25V~36V (Input voltage difference at least 1.5V higher than output) [Step Down Voltage Module]: This is a high efficiency DC-DC step down voltage regulator power module [Short-circuit Protection]: This buck module supports overheating protection and short circuit protection [Widely Application]: This buck converter is widely used for various electronic projects [Package Included]: Comes with heat sink for better heat dissipation, and several standoffs and nuts [Specification]:Input voltage: 4.0V~38V; Output voltage: 1.25V~36V (Input voltage difference at least 1.5V higher than output) [Step Down Voltage Module]: This is a high efficiency DC-DC step down voltage regulator power module [Short-circuit Protection]: This buck module supports overheating protection and short circuit protection [Widely Application]: This buck converter is widely used for various electronic projects [Package Included]: Comes with heat sink for better heat dissipation, and several standoffs and nuts