Package includes:1 x 18B20 waterproof temperature sensor1 x DHT11 temperature and humidity sensor1 x MQ-2 smoke gas sensor1 x Active buzzer sensor1 x Relay1 x Brightness sensor1 x Human body infrared sensor module1 x Ultrasonic sensor1 x Stepper motor1 x Stepper motor driver board1 x 21cm male to female DuPont line1 x 21cm female to female DuPont line1 x RFID set1 x OLED display screen1 x Infrared photoelectric switch1 x Infrared remote control set1 x 5V/2A adapter