1.1602 I2C 1602 replaced the screen to control it more convenient, 2.New RFID module and RFID keychain and white card, 3. Added DS1302 clock module, 4. New of the sound detection module, 5.New temperature and humidity module, 6. New water level detection module, 7. Added 4 * 4 keypad module 8. New of 8 * 8 dot matrix module Colour:Photo Color Material:plastic Package Contents: 1 x for Board 1 x USB Cable 1 x Jump Cable 1 x Breadboard 5 x LED Light 1 Pack x Resistor 1 x Female to male dupond line 1 x Potentiometer 1 x Buzzer 1 x 74HC595 1 x Infrared receiver 1 x LM35 1 x Flame Sensor 1 x Ball Switch 1 x Photoresistor 1 x Key button 1 x Remote control 1 x 4-digit display tube 1 x 8 x 8 Dot matrix module 1 x 1-digit display tube 1 x Stepper motor driver board 1 x Stepper motor 1 x 9g Servo 1 x IIC 1602 LCD 1 x XY joystick module 1 x Temperature module 1 x Water test module 1 x RFID Module 1 x RFID keychain 1 x RFID White card 1 x Sound Module 1 x Relay Module 1 x Clock Module 1 x 4 x 4 Key board 1 x RGB 3 color module 1 x 9V battery Snap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.