This shield contains the following device for testing your sketch and integrating your design.

• The 128x64 OLED display able to shows characters send by Arduino
• Active buzzer with simple sounding components and very easy to control
• DHT11 temperature and humidity sensor collects temperature and humidity in the environment, which is the first choice for environmental monitoring.
• 1.5A relay module can carry ordinary high current devices
• The sweep potentiometer is connected to Analog input.
• RGB LED displays rich colors.
• Mini rocker button four directions and one down button.