ITEM NAME:DC-DC Adjustable Boost Module 3V 5V 12V to 19V 24V 30V 36V Power Supply Board Product Description Description: 1pc DC-DC Adjustable Boost Module 3V 5V 12V to 19V 24V 30V 36V Boost Voltage Power Supply Board Specifications: Input: 3V-35V Output: 4V-40V adjustable Efficiency: 94% (Max.) Working temperature: -40Â °C-+85Â °C Load capacity: up to 80W Wiring method: the terminal is free of soldering, IN is input, OUT is output Note: The smaller the voltage difference between input and output voltage, the greater the load capacity and the higher the efficiency. Module size: 37*32*15mm/1.46*1.26*0.59in Weight: 17g Notes: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 X DC-DC Adjustable Boost Module.Included: 1 X DC-DC Adjustable Boost Module. Load capacity: up to 80W. Module size: 37 32 15mm/1.46 1.26 0.59in. Output: 4V-40V adjustable. Input: 3V-35V. Due to the different display and different light, the picture may not show the actual color of the item.