Check the listing for details. 5PCS DC-DC Step-up Module 2A Adjustable Booster Board Micro USB interface. Condition: New, Made in China. Listed at 7.59 USD. 5PCS DC-DC Step-up Module 2A Adjustable Booster Board Micro USB interface for Arduino Description: The whole network smallest adjustable boost module can be easily installed in a variety of small equipment. The module supports MicroUSB input, a USB charger or mobile power supply can easily get to it 9V, 12V, 15V, 18V, 24V, easy to use. Wide input and output voltage, high conversion efficiency. Maximum output current: 2A (recommended for use within 1A) Input voltage: 2 v ~ 24 v Maximum output voltage:> 28 v (recommended for use within 26V) Efficiency:> 93% Size: 30mm * 17mm * 14mm (L * W * H) This module is a step-up module, the output voltage is greater than the input voltage. Peak current output current does not exceed 2A. Package Included: 5 X 2A Booster Board.