This MB102 Breadboard Power Supply Module provides a convenient and reliable power source for breadboard prototyping. It can output both 3.3V and 5V, ideal for Arduino, ESP, and sensor-based projects. It easily connects to standard 830-point breadboards. Features Dual output: 3.3V and 5V selectable Direct plug-in for MB102 breadboards On/Off power switch for convenience Independent channel voltage selection USB and DC jack input options Applications Breadboard prototyping and testing Arduino and ESP32 projects Powering sensors and small circuits Educational and DIY electronics