Description: Input voltage range: 4.5-28V Note: 28V is the maximum voltage of the limit. Please leave some room for use or it will be damaged. Output voltage range: 1.3V-25V (buck mode, input must be greater than 2V output voltage) Output current: continuous 1.5A output Output power: up to 15W Ripple frequency: about 150Khz Ripple peak value: about 100mV Voltmeter accuracy: (5 +1 words) Static power consumption: typically about 20ma (closely related to input voltage output voltage and digital tube color, actual current will be biased) IN+: Input positive IN- Input negative OUT+ Output positive OUT- Output negative Specification: Material: plastic + electronic components Product size: 62mm x 26mm x 14mm/2.44 x 1.02 x 0.55inch Package Includes: 1 Piece Buck module with digital tube module(2 Pack) Note: The current detection module is the low-end testing, please do not directly connect the input negative with the output negative!