Features: Multiple Channel Option: This optocoupler module offer 2way/ 4way/ 8way channel option to suit various control needs with flexible project adaptability. Bidirectional Isolation: Features PC817 optocoupler isolation technology for complete signals and power separation, effectively reducing industrial noise interferences in complex electromagnetic environment. Wide Voltages Compatibility: Support 3.3V/5V control signals and 3.6V-24V output ranges, enabling seamless integration with microcontrollers, PLCs, and relays. Stable Signals Switching: Delivers reliability 4KHz signals transmission for driving relays and MOSFETs, ensuring accuracy control in industrial automation systems. Plugs and Play Design: Includes solderless terminals connection and onboard jumpers for easy high/low logics configuration, simplifying installation and maintenance. Specifications: Component: ABS 2way Size:Approx.38x29mm/1.5x1.14in 4way Size:Approx.48x38mm/1.89x1.5in 8way Size:Approx.84x38mm/3.31x1.5in Option Type: 2way, 4way,8way (channels are independents and can be controlled individually) Installation hole spacing: 42mm/1.65in wide side hole spacing:32mm/1.26in Driving end signals voltages: 3.6V-24V (compatible for 3.3V/5V control levels) Output terminals voltages ranges: 3.6V-30V Most response frequency: 4KHz (pulses signals recommended ≤4KHz) Package Includes: 2pcs PC817 Optocoupler Isolation Board note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.