817 Optocoupler 8-Channel Photoelectric Isolation Module

The OKY2122-2 is an 8-channel isolation module designed to provide safe galvanic isolation between control and power circuits. Based on reliable PC817 optocouplers, it effectively protects sensitive control devices from high-voltage interference and surges.

Key Features
- Features eight independent channels, allowing for simultaneous control of multiple devices, even with different voltages.
- Supports a wide input signal voltage range of 3.6V to 24V to control output loads from 3.6V to 30V.
- Each output can be configured for either high potential or pull-down operation using onboard jumpers.
- Suitable for switching applications with a maximum signal frequency of 4 kHz.

Applications
This module is ideal for protecting the I/O ports of microcontrollers (MCUs) and PLCs from electrical noise and voltage spikes. It is also highly effective for voltage level matching, suppressing noise in switching circuits, and driving higher-power components such as transistors and relays.