Product description We delivering products that are designed to elevate your projects to the next level. Whether you are a hardware engineer, hobbyist, student, or professional. Our development boards and components are here to help. Welcome to JESSINIE, for development boards and electronic components. At JESSINIE, we providing a wide range of development board modules, displays, sensors, electronics, power accessories, and DIP sockets to meet your project needs. At JESSINIE, We focus on the importance of reliable and efficient products, we prioritize quality and performance in everything we offer.
Choose JESSINIE for your development board and electronic components needs. Thank you for choosing JESSINIE. Pin names and functions
VIN: Positive pole of signal power supply, 3.3
-5V 5V: Relay power supply positive pole, 5V
GND: Input output negative pole, shared
SCL: IIC clock line, high level consistent with VIN voltage
SDA: IIC data cable, high level consistent with VIN voltage
NC: Normally closed end of relay
COM: Relay common terminal
NO: Relay always starts
J1 Jumper: Insert the jumper cap and short circuit the signal power and relay power, disconnect the jumper cap and disconnect the signal power and relay power