Industrial Grade 2-Channel Solid State Relay Module – 3-24V DC Output, AC Control Signal (Selectable High/Low Level Trigger)

Description

The Industrial Grade 2-Channel Solid State Relay Module is a high-reliability switching solution designed for demanding industrial and commercial applications. Unlike traditional mechanical relays, this module uses solid-state technology with no moving contacts, providing silent operation, extremely long service life, and exceptional resistance to shock and vibration. It is ideal for applications requiring frequent switching, precise timing, and maintenance-free operation.

The module features two independent output channels, each capable of switching DC loads from 3V to 24V. Control is provided through an AC control signal input, making it suitable for interfacing with industrial controllers, PLCs, and automation systems that use AC signaling. A selectable high/low level trigger function allows the module to be configured for either active-high or active-low control logic, ensuring compatibility with a wide range of control systems.

Solid-state relays offer significant advantages over mechanical relays in industrial environments. With no mechanical wear, they can perform millions of switching cycles without degradation. The absence of contact arcing eliminates electromagnetic interference (EMI) and extends the life of connected equipment. The module also provides faster switching speeds than mechanical relays, making it suitable for applications requiring precise timing and rapid response.

The module is designed for industrial-grade reliability, with robust construction and optical isolation between the control and output circuits. This isolation protects sensitive control electronics from voltage spikes and transients on the output side, ensuring safe and reliable operation in harsh electrical environments.

The module features screw terminal connections for secure wiring of both control signals and output loads, and includes LED indicators for each channel to provide clear visual feedback of the relay state. The compact form factor and standard mounting holes make it easy to install in control panels, DIN rails, and equipment enclosures.

Whether you are building an industrial control panel, automating a commercial process, or upgrading an existing relay system, the Industrial Grade 2-Channel Solid State Relay Module provides a reliable, long-lasting solution. It is suitable for individual engineers, system integrators, and businesses purchasing in bulk for industrial deployments.

Features

• Two independent channels — Control two separate DC loads simultaneously

• 3-24V DC output — Wide output voltage range for diverse load requirements

• AC control signal input — Compatible with industrial controllers and PLCs

• Selectable high/low level trigger — Configurable for active-high or active-low logic

• Solid-state technology — No moving contacts, no arcing, silent operation

• Extremely long service life — Millions of switching cycles without degradation

• Optical isolation — Protects control electronics from output-side transients

• LED indicators — Visual feedback for each channel’s state

• Screw terminals — Secure wiring for control and load connections

• Industrial-grade construction — Designed for harsh environments and continuous operation

Technical Specifications