ITEM NAME:DC-DC Adjustable Step Up Module 3 5 12V to 19 24 30 36V Boost Converter #gib Product Description Description: Specifications: Input: 3V-35V Output: 4V-40V adjustable Efficiency: 94% (MAX) Working temperature: -40 ° C ~ + 85 ° C Load capacity: up to 8 Product size: 37*32*12mm/1.46*1.26*0.48" Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement. Included: 1 X DC-DC Adjustable Step Up Module.Included: 1 X DC-DC Adjustable Step Up Module. Load capacity: up to 8. Output: 4V-40V adjustable. Input: 3V-35V. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures.