Product Description<br><br>AMS1117 3.3V power supply module<br><br> <br> <br>1  on-board AMS1117-3.3 chip<br> <br>2  the input voltage range of 4.75V-12V<br> <br>3  on-board power indicator light  indicate power is turned<br> <br>4  board size: 18.5 (mm)