Upgrade Mega 2560 Kit Retail Box(No Battery):1pcs High Quality Retail Box1pcs UNO R31pcs Mega 2560 R31pcs HC-SR5011pcs HC-SR041pcs USB Cable1pcs 65 Jumper WiRes1pcs 830 Point BREADBOARD15pcs led (Red, Green, Yellow)30pcs Resistance(220R, 10K, 1K)1pcs 10 Pin Dupont Line(Male to Female)1pcs Potentiometer1pcs Active Buzzer1pcs Passive Buzzer1pcs 74HC595N1pcs Infrared Receiving Head1pcs LM35DZ1pcs Flame Sensor2pcs Roll Ball Switch3pcs 5mm LDR5pcs Button Switch with Cap1pcs IR Remote Control1pcs One Digital Tube1pcs Four Digital Tube1pcs 8*8 Dot Matrix Tube1pcs UNL2003 Driver Board1pcs 5V Stepper Motor1pcs SG901pcs LCD1602 IIC I2C1pcs PS2 Game Joystick Module1pcs DHT11 Temperature and Humidity Sensor Module1pcs Water level measurement module1pcs RFID module1pcs RFID key ring1pcs RFID card1pcs sound sensor module1pcs one road relay module1pcs RTC module1pcs 16 buttons matrix keyboard module1pcs RGB three color module1pcs 9V Battery Connector