(This book is written in a task driven and project-based way, highlighting engineering practicability, project-oriented, and setting multiple tasks based on the development of solar photovoltaic module monitoring application system based on the Internet of things. Go deep into every task from easy to difficult; Each project is a complete workflow, including the perception layer, transmission layer and application layer of the Internet of things system, which is convenient for the implementation of the teaching of "combining theory with practice", and is conducive to cultivating students' design ability and the development ability of the Internet of things application system.This book can be used as a textbook for the Internet of things, electronic information, communication, computer, automation, sensor network technology and other related majors in higher vocational colleges, as well as a reference for engineering and related majors. From things to networking technicians.)