Features: Universally Compatibility: This optocoupler isolation module features adaptable input (1.8V 24V) and output (1.8V 24V) voltages ranges, compatibles diverse NPN signals systems. Eliminates output pull up resistors for flexible wiring configurations. Double Signals Support: Designed to process both NPN input signals while delivering corresponding output signals. Integrated LED light provides visual confirmation of active input. Modulars Expansion Capability: Single channel design allows combination with PCB enclosures to create customizable multi circuit arrays enables flexible integration. Simplified Installation: Streamlined design removes output pull up resistors, reducing connection complexity. Aviation grade plastic housing ensures durability in electronic control applications. Enhanced Visibility: Built in input LED light provides immediate operational feedbacks. Compact form factor facilitates installation in space constrained control panels and automation systems. Specifications: Input voltages can be customized from 1.8V to 24V The output voltages applicable to 1.8V-24V Size about 72×10mm/2.83X10.39In Option：1.8V/3-5V/ 12V/ 24V Package Includes: 1PC 1 channel optocoupler isolation module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution