Description <br> Features: Brand new and high quality <br> Sensors expansion: This product is sensors expansion board, which can provide rich sensors interfaces, making it convenient for users to connect and use various sensors. <br> V4.0 interfaces expansion: The product adopts V4.0 interfaces expansion module design, providing more interfaces option and functional support to meet the needs of users for interfaces expansion. <br> Multi-interfaces expansion: The product provides multiple digital input/output ports, analog input ports and special sensors interfaces, allowing users to flexibly connect and apply various sensors. <br> Simple and easy to use:The operation is simple and easy to understand, and it is convenient and quick without additional welding or complicated wiring. <br> High-quality manufacturing: the product is made from high-quality materials, which has good durability and stability, and can run stably for a long time to ensure the accuracy and reliability of the sensors. <br> <br> Specifications: Material:PCB <br> Operating Voltage: DC5V <br> Input Voltage (recommended): DC7-12V <br> Input Voltage (limits): DC6-20V <br> Buckled Communication Port : Selectable between I2C and UARt. <br> Size:Approx.7x5.8cm/2.76x2.28inch <br> <br> Package Includes: 1x Expansion Board <br> <br> note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. <br> 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. <br>