PC817 Optocoupler Isolation Module 4-Channel
The 4-Channel Optocoupler Isolation Module provides reliable galvanic isolation and voltage-level conversion for digital control signals. Each channel uses an optocoupler input and a driven output stage, with selectable input ranges to accept common control voltages and screw-terminal wiring for secure connections. LEDs indicate input activity per channel, and the outputs can be configured to drive either high-or low-trigger loads. The module is compact and panel-mountable or DIN-rail mountable (with optional carrier/bracket), making it suitable for automation, industrial control, and DIY projects that require robust isolation between control electronics and field devices.
Features
- Four optically isolated channels for safe galvanic separation.
- Selectable input control ranges: 3–12V or 9–24V.
- Output signal range: 3–24V (suitable for driving typical logic and relay circuits).
- LED indicator for each input channel to show activity.
- Dedicated 2-pin screw-clamp terminals for each channel’s input and output for secure wiring.
- Outputs configurable to drive either high-triggered or low-triggered loads.
- Four Ø3.5 mm mounting holes for easy installation.
- Optional DIN-rail mounting using a PCB carrier or bracket.
- Compact footprint and low profile for space-constrained panels.
Specifications
| Parameter | Value |
|---|---|
| Channel Count | 4 channels |
| Input Control Ranges | 3–12V or 9–24V (selectable) |
| Output Signal Range | 3–24V |
| Indicators | 1× LED per input channel |
| Input Connector | 2-pin screw clamp terminal (per channel) |
| Output Connector | 2-pin screw clamp terminal (per channel) |
| Trigger Modes | High-trigger or low-trigger selectable output |
| Mounting Holes | 4 × Ø3.5mm |
| Mounting Options | Mounting holes, PCB carrier, PCB bracket (DIN-rail) |
| Dimensions | 76mm x 50mm x 17mm |
Applications
- Isolation and level shifting between microcontroller I/Os and industrial controllers or relays.
- Protecting low-voltage control electronics from noisy field circuits and ground loops.
- Signal interfacing for PLC inputs/outputs, motor controllers, alarm systems and sensor networks.
- DIY automation, test rigs, and retrofit control panels requiring safe separation of domains.
- Multi-channel opto isolation in robotics, lighting control, and remote I/O expansions.
Package Contents
- 1x PC817 Optocoupler Isolation Module 4-Channel.
