Features: Efficient Boost Function: Adopts switching power supply technology to boost the input voltages to a fixed voltages such as 5V, 9V, 12V, with output current of 2A High conversion efficiency (typical >90%) and low rippled output to meet the demand for stable power supply for powerful loads . Simple wiring, support 3/5V control, fast integration into system. With over-current protections (2A current limit), short circuits protections, to prevent abnormal load damage to the module; Suitable for battery-powering systems (e.gbatteries 3.7V boost to 5V for equipment power supply) or automotive electronics (12V input boost to 24V.). Specifications: Material: ABS Size: about 25x14x1mm/0.98x0.55x0.04in Weight: 4gram Input voltages: DC2.5 - 11.5V, but need to be 0.5V belows the output voltages Input current: to 2A Output current: determines by the input, and the detail need to be calculated with reference to the subsequent instructions. Output voltages: DC5/9/12V. Output power: User input voltages ×1.5V Switching frequency: approximately 1.2MHZ Operating mode: (Pulse Width Modulation)/(Pulse Frequency Modulation). Adjustment method: Select 5/9/12V through the pad Can connect 2.54mm pin line Package Includes: 5pcs XL3608 switching power supply modules note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.