Brand N/A Model WM02 Quantity 1 Piece Color Others Material PCB Chipset ATMEGA328P English Manual / Spec Yes Download Link http://arduino.cc/en/Main/Software Other Features Summary Microcontroller ATmega328 Operating Voltage 5V Input Voltage (recommended) 7-12V Input Voltage (limits) 6-20V Digital I/O Pins 14 (of which 6 provide PWM output) Analog Input Pins 6 DC Current per I/O Pin 40 mA DC Current for 3.3V Pin 50 mA Flash Memory 32 KB (ATmega328) of which 0.5 KB used by bootloader SRAM 2 KB (ATmega328) EEPROM 1 KB (ATmega328) Clock Speed 16MHz Packing List 1 x Arduino uno R3 1 x RFID whiteboard 1 x RFID key 1 x RFID module 1 x Relay 1 x Analog stick module 1 x 4 * 4 matrix 1 x Water level module 1 x The clock module 1 x RGB modules 1 x Sound module 1 x DHT 11 module 4 x Keys 4 x Hats 1 x Senior bread board Components box 1 x USB cable (57 cm) 30 x Bread lines (26 cm longest shortest 15 cm) 1 x 4*4 button