1、Expansion board integrates multiple module functions, nine kinds of functions concentrated in this one module. 2、No welding, no connection, just download the program directly to complete the experiment. 3、Expansion ports are reserved, and other module experiments can be completed. 4、Custom heightened pin headers will not short circuit with the USB interface of the other board. 5、Small in size and light in weight, convenient to carry and use at any time, very convenient and practical. <div class="wang-edit-text"><p class="wang-edit-text">Item Type: Multifunction Expansion BoardMaterial: ResinThe Functional Modules Are as Follows:2-way button module2-way LED moduleFull color LED moduleInfrared receiver moduleBrightness sensor moduleLM35D temperature sensor module:Passive buzzer moduleRotary potentiometer moduleTemperature and Humidity Sensor Module:1 x I2C Interface (A4 SDA/A5 SCL)1 x TTL serial port2 x Digital ports (D7/D8)1 x Analog port (A3)Reset button<style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Multifunction Expansion Board