Features: The Optocoupler Isolation Board features PC817 chip for 5KHz high frequency signal conversion, offering DC3V-5V/12V/24V isolation protections and NPN level shifting between circuits. Design with positive phase amplification and 1channel isolation, this module maintains equal input/output signal while preventing voltages interferences through photoelectric coupling technology. Ideal for electronics engineers and industrial automation technicians requiring reliable signal isolation in PLC systems, microcontroller interfaces, or motor control applications. Perfectly integrates with microprocessor I/O switching, power regulation equipment, and communication devices needing voltages isolation up to 24V in harsh electrical environment. Each pack contains 2 ready to use module with plastic construction, supporting DC3V-24V voltages ranges for flexible deployment in robotics, intelligent home systems, and industrial control panel. Specifications: Component:Plastic Size:Approx.40.3x14.9x17mm/1.58x0.58x0.7inch Optional input voltages: 3 v to 5V/12V/24V Output signal voltages: DC1.8V~24V Operating Current: >1MA (most 50MA) Most output current 50MA (input current must be 15-20MA) Working temperature -55~110 degrees Most application signal frequency: 5KHz Applicable scenario:Industrial automation Option Type: 3 v-5V,12V 24V; Package Includes: 2pcs Optocoupler Isolation Module note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.