2pcs 1-Bit AC 220V Optocoupler Isolation Module Rakstore 24V Board

Description

Product Overview

The 2pcs 1‑Bit AC 220V Optocoupler Isolation Module from Rakstore is engineered to provide precise detection of mains voltage while safely isolating low‑voltage digital circuitry. Housed in a compact 73 mm × 15 mm board, the module incorporates two independent optocoupler channels, each capable of sensing 220 V AC and delivering a clean TTL‑level output. The design supports a flexible power supply range of 3‑5 V for microcontroller applications or 24 V when interfacing with programmable logic controllers (PLCs). Robust construction, low power consumption, and a clear pin layout make it ideal for prototyping, testing, and integration into industrial automation systems.

Usage

This module excels in environments where reliable voltage monitoring is critical. Connect the 2‑pin 5.0 terminal to the 220 V AC line you wish to monitor, and link the 3‑pin terminal to the input of your microcontroller or PLC. When the AC line is present, the optocoupler activates, pulling the output pin high to a TTL‑compatible 3‑5 V level. The module can be powered directly from a 24 V PLC supply, allowing seamless integration into existing control panels. Typical applications include safety interlocks, power‑on detection, fault monitoring, and energy‑management systems in manufacturing, HVAC, and renewable energy installations.

Why Choose Us

Rakstore’s reputation for quality and reliability underpins this optocoupler module. Each unit undergoes rigorous testing to ensure consistent performance across temperature ranges and electrical noise conditions. The dual‑channel design provides redundancy, reducing the risk of single‑point failures in critical systems. Our modules are backed by responsive technical support and a clear warranty policy, giving engineers confidence that they can rely on the product for long‑term deployments. Additionally, the compact footprint saves valuable board space, enabling more efficient designs without compromising functionality.

Key Features

• Dual‑channel optocoupler design for reliable 220 V AC detection
• TTL‑level output compatible with microcontrollers and PLCs
• Flexible power options: 3‑5 V for MCU or 24 V for PLC integration
• Compact 73 mm × 15 mm board size saves space on crowded panels
• Comprehensive after‑sales support and warranty from Rakstore

FAQ

Can the module be used with a 5 V microcontroller?

Yes, the module’s output is TTL‑level and works directly with 3‑5 V logic, making it suitable for most 5 V microcontrollers.

What is the maximum AC voltage the optocoupler can detect?

The optocoupler is rated for up to 250 V AC, providing a safety margin above the standard 220 V mains voltage.

How should I connect the module to a PLC?

Connect the PLC’s 24 V supply to the module’s power pins, link the 2‑pin terminal to the AC line, and route the output pin to the PLC’s input. Ensure the PLC’s COM terminal shares the same ground as the module’s power negative.

Is there any isolation between the input and output?

Yes, the optocoupler provides electrical isolation, protecting low‑voltage circuitry from high‑voltage spikes and ensuring safe operation.

What warranty does Rakstore offer?

Rakstore provides a one‑year limited warranty covering manufacturing defects, along with dedicated technical assistance for integration queries.