1-Channel PLC Optocoupler Isolation Module Voltage …, Petaling Jaya

???? LOCAL ????READY STOCK ????FAST SHIPPING

???? Description:
This module detects the presence of 220 VAC and safely converts it into a TTL-level signal (3–5 V) for microcontrollers or 24 V logic for PLCs, while maintaining electrical isolation via an optocoupler.

⚙️ Specifications :
Detection Voltage: 220 VAC
Isolation: Optocoupler
Supply Voltage: 3–5 V (TTL/microcontroller)
PLC Compatibility: 24 V logic
Output: NPN transistor (OUT LOW when AC present)
PCB Size: ~72 mm × 15 mm

???? How It Works in These Applications
When 220V AC is present, he optocoupler is activated.
Output signal goes LOW (or toggles based on wiring).
The controller (PLC, Arduino, etc.) reads the signal and reacts accordingly.

???? Applications:
1. ✅ AC Voltage Presence Detection
Detect whether a device, socket, or circuit is energized (i.e., whether 220V AC is present).
Example: A washing machine controller that detects whether the heater circuit is live.

2. ⚙️ PLC Input Signaling (Industrial Automation)
Interface with Programmable Logic Controllers (PLCs).
Converts 220V input into a logic-level signal (e.g., 24V LOW for “AC present”).
Used in industrial equipment to signal status or interlock systems.

3. ???? Smart Home / IoT Projects
Detect if a specific appliance is ON.
Trigger microcontroller-based automation (e.g., turn on an exhaust fan when a washing machine is on).

4. ???? Phase Monitoring / Power Line Status
Detect phase loss or voltage drop on a particular line.
Especially useful in 3-phase systems—use 3 modules to monitor L1, L2, L3.

5. ???? Backup Power Management
Sense main line failure (i.e., grid AC loss) and automatically trigger battery inverter/UPS switchover.
Useful in solar or off-grid systems.

6. ???? Alarm Systems / Safety
Detect when dangerous 220V is unexpectedly present on a wire.
Generate alerts or shut down systems if needed.

7. ???? Lighting Control Feedback
Used in lighting control panels to detect whether a light is actually ON (receiving AC), not just commanded ON.