PENGLIN 5PCS PC817 3.6-30V Optocoupler Isolation Board Optoelectronic Isolator, 2 Channel Module Converter

This module is used in practical applications where isolated control and voltage conversion are required. It provides an interface capable of controlling voltages ranging from 3.6 V to 24 V using a 3.3 V or 5 V control signal; when the control signal is active, the controlled output also becomes active. The optical isolation provides strong resistance to interference. It can drive high-power transistors, MOSFETs and other components requiring high-voltage drive, or directly activate low-power 24V relays. For pulse signals, please note that the 817’s limit is 4 kHz; do not use this module with control signals exceeding 4 kHz, as it will not function correctly. "By selecting the jumper cap for each channel, you can individually control whether it shares a ground with the input. If the jumper cap is shorted, the output negative terminal is connected to the power supply negative terminal."