MB102 power supply module for 5V 3.3V contact boards

The MB102 / HW-131 power module is a robust power source for Arduino, Raspberry Pi and ESP8266 contact boards. The device offers a dual power path with selectable source. It features a convenient on/off switch and a power indicator LED. It can be powered from the computer's USB port and using a 2.1/5.5mm DC plug. Specification:

* Selectable supply voltage per line: 5V, 3.3V, OFF

* Maximum USB current consumption: 500 mA

* Maximum current consumption from DC socket: 700 mA

* Pinout underneath the module for mounting in the contact plate

* Power switch

* LED: indicating the presence of voltage

* Possibility to set two different voltages simultaneously: e.g. 3.3V on one side, 5V on the other

* Configuration of settings using jumpers