3.3V output product parameters: Input voltage: 3.2V~40V Output voltage: 3.3V Output current: 3A (not more than) using actual test within 2A for long-distance running Conversion efficiency: 92% (not exceeding) Output ripple: <30mV Switching frequency: 65KHz Working temperature: -45℃~ +85℃ 5V output product parameters: Input voltage: 3.2V~40V Output voltage: 5V Output current: 3A (not more than) using actual test within 2A for long-distance running Conversion efficiency: 92% (not exceeding) Output ripple: <30mV Switching frequency: 65KHz Working temperature: -45℃~ +85℃ 12V output product parameters: Input voltage: 3.2V~40V Output voltage: 12V Output current: 3A (not more than) using actual test within 2A for long-distance running Conversion efficiency: 92% (not exceeding) Output ripple: <30mV Switching frequency: 65KHz Working temperature: -45℃~ +85℃ Wiring port: IN+ input positive IN- input negative OUT+ output positive OUT- output negative Input voltage range: DC 3.2V to 40V (the input voltage must be more than 1.5V higher than the output voltage, and cannot be boosted) Output voltage range: DC 3.3V or 5V fixed voltage output, high efficiency (maximum 92%), maximum output current is 3A, (no-load debugging is recommended) The measured load regulation rate is less than 1% when 12V input and 5V output current are 1A Note: This is a step-down module, the input voltage must be higher than the output voltage, the output below 2A can be used for a long time without adding a heat sink, the output current is greater than 2.5A or the output power is greater than 10W, please add a heat sink for long-term work Turn it counterclockwise to reduce the pressure, it doesn't reflect at first, and it starts to change after 10-20 laps. Package includes: Module X1