The keyes ESP32-IO expansion board is compatible with the keyes ESP32 Core board (KE0162). It breaks out all the pins of the keyes ESP32 Core board with 2.54mm pitch pins. Two rows of pins with 2.54mm pitch supply DC 3.3V for external sensors and modules.Simultaneously, keyes ESP32 Core board can by supplied by inputting DC 7-12V voltage via DC head of shield. In addition, a DIP switch on the expansion board is used to control the switch.Technical parameters: supply voltage: DC 7-12VWorking current: 60mAMaximum : 0.3WWorking temperature: -25 to +65Size: 30mm x 20mmEnvironmental protection attribute: ROHSColour: redMaterial: plasticPackage Contents:1 x ESP32-IO Expansion BoardOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.