MB102 Breadboard Power Supply Module 3.3V 5V For Arduino Solderless wireless robot car It is a WiFi Audio

It is a WiFi Audio which allows your mobile phone to connect to its WiFi and play the music in your phone

LPG (petroleum)

Resolution adjustment range: 9-12

which can realize the prevention

(Up to 4 can be stacked)

MB102 Breadboard Power Supply Module 3.3V 5V For Arduino Solderless wireless robot car It is a WiFi AudioThe input voltage through the barrel socket must be between 6. 5 V and 12 V. The manual states the maximum output current to be 700 mA. There is a green LED to indicate the presence of power, and an ON OFF latching switch to control the power to the board. Jumper Pins and HeadersJumper pins are utilized for selecting the voltage levels on each side of the breadboard power rails. You can choose between 5 V, OFF, and 3. 3 V. Voltage Regulator AMS1117