1.Extract 14 digital I / O ports (12 servo interfaces) and power supply. 2. Six analog I / O ports. 3.One digital port external power source terminal. 4.Automatic switch between external power supply via digital port and integrated power supply. 5. An external power input terminal and an input pin. 6.RS485 interface. 7. Reset button. 8.Bluetooh wireless data interface. 9.APC220 / Bluetooh V3 bluetooth wireless data transmission interface. 10. IIC / I2C / TWI interface. 11.3.3 Output port V. 12. SD card module interface.
