Feature: 1. There is a voltage regulator on the board, which can accept DC voltage up to DC12V. 2. A PTC fuse and diode are added to protect the power supply circuit and correct the RX and TX LED circuits. 3. The board with 2 pins has good contact performance, ensuring stable working. 4. High quality material can make sure the durability and stability of the product. 5. The board is widely used, suitable for college students, engineers, technicians, factories, DIY electronics enthusiasts, etc. Specification: Item Type: SCM Development Board.Material: PCB Description: This small board to do all in the neiahbourhood of the skills: 4 channel 10 bit ADC, 5 PWM pin. 12 DIO and hardware serial connection Rx and Tx you are familiar with. Running at 16MHz and 5V, this committee will remind you of many other compatible boards you like, but this little guy can go anywhere. There is a voltage regulator on the board, so it can accept voltages up to 12VDC. If you are supplying an unstable power supply board, be sure to connect to the "RAW" not VCC pin. This latest version fixes silk errors so that pin 14 is the correct marking. We also added a PTC fuse and diode to protect the power supply circuit and correct the RX and TX LED circuits. Package List: 1 x SCM Development Board2 x Pin Header