A smart relay is a programmable device that combines the capabilities of a traditional relay with advanced features such as communication options, monitoring, and automation. Unlike standard relays, which typically function as simple switches to control the flow of electricity based on input signals, smart relays offer additional intelligence, allowing them to be programmed to perform complex tasks. They are equipped with microcontrollers and communication interfaces that enable them to integrate with other smart devices and control systems.

    Smart relays are primarily used to manage and automate electrical circuits. Their key functions include switching electrical loads, monitoring conditions such as voltage, current, and temperature, and providing feedback or alarms when certain thresholds are exceeded. Moreover, they can communicate with other systems or devices via protocols like Modbus, CANopen, or Ethernet, making them ideal for use in smart grids, industrial automation, and even residential smart homes.