Description: 14 digital input/output ports RX, TX, D2~D13 8 analog input ports A0~A7 1 pair of TTL level serial port transceiver port RX/TX 6 PWM ports, D3, D5, D6, D9, D10, D11 Using Atmel Atmega328P-AU microcontroller Support serial port download Support external 3.3V~12V DC power supply Support 9V battery power supply Clock frequency 16MHz Specification: Material: electronic components Size: 33.3x18.0 mm / 1.31x0.70 inch Package Includes: 1 piece module 3 pieces of pin header
