1. [EASY PLC CONNECTION] Quickly integrate this Optocoupler Isolation Board into your PLC system by connecting the COM terminal to a 24V power supply. The configuration allows for seamless connection between input terminals and signal outputs S1‑S8, enhancing your automation processes with minimal setup effort.
2. [RELIABLE VOLTAGE DETECTION] This module efficiently detects the presence of AC 220V, offering you peace of mind when monitoring your electrical systems. Coupled with its compatibility with MCUs operating at 3-5V, it serves as a versatile tool for comprehensive power testing and monitoring.
3. [CLEAR LEVEL OUTPUT] Experience intuitive feedback with the board's output signals - a low level indicates that the 220V is present, while a high level is output when the power is off. This ensures that you can quickly assess the operational status of your circuits without confusion or delay.
4. [SIMPLE WORKING FUNCTIONALITY] The board's blue 5.0 terminal directly connects to the 220V voltage source, and the yellow pin serves as the output signal. This clear color-coded setup simplifies installation and usage, making it accessible even for DIY enthusiasts or those with limited technical knowledge.
5. [DURABLE CONSTRUCTION] Crafted from high-quality PCB material, this Optocoupler Isolation Board boasts exceptional durability and reliability for long-term use. Its robust design minimizes malfunction, ensuring a dependable solution for all your voltage detection needs.

Spec:
Item Type: Optocoupler Isolation Board
Material: PCB
Function: Test whether AC 220V exists.
Output TTL Level: MCU can be used for testing, the voltage is 3-5V.
Connection: Output can be connected to PLC 24Vb.

Package List:
1 x Optocoupler Isolation Board

Notice:
After the module is powered up, do not touch any part of the white wire frame on the board as it is high voltage. Pay attention to electrical safety.