3-Channel RS485 Relay Module 5-32V Optocoupler Isolation for Industry

Summary

• Function: The relay module is an electrical control device. When the change of the input quantity (excitation quantity) meets the specified requirements, it causes a predetermined step change in the controlled quantity in the electrical output circuit.
• Interactive Relations: It features an interactive relationship between the control system (also known as the input circuit) and the controlled system (also known as the output circuit).
• Application: Used in automated control circuits, the relay module essentially acts as an "automatic switch" that uses a small current to control the operation of a larger current. Therefore, it plays roles in automatic regulation, safety protection, and circuit conversion within the circuit.
• Can Be Assigned on for RS485 Bus: The relay module can be assigned an address on the for RS485 bus, with a range from 1 to 255. Corresponding commands can be sent to the relay according to its address, allowing the relay receiving the command to open or close any controlled circuit.
• Durable Structure: Support for multiple devices being controlled by a single host makes the relay module well suited for industrial automation. Its ABS housing and rail mount design enhance its practicality for use in real environments.