Specifications:Material: PCBInput Voltage: DC6.5-12V or USB power-upOutput Voltage: 3.3V, 5V switchableMax. Output Current: <700mAItem Size: 53 * 32mm / 2.09 * 1.26inItem Weight: 11g / 0.41ozPackage Weight: 13g / 0.46ozPackage Size: 7 * 4 * 2.5cm / 2.76 * 1.57 * 0.98in Features:Special power module for bread board, compatible with 5V and 3.3V.Apply to MB102 bread board, very useful for arduino breadboard projects.DC 6.5-12V or USB power supply the input voltage.Output voltage can be switched between 3.3V and 5V.Two-way independent control, can be switched to 0V, 3.3V, 5V.Onboard two 3.3V, 5V DC output pin, convenient for external using.