817 optocoupler / 2 way voltage isolation board / voltage control adapter module / photoelectric isolation module
When encountering the need for isolation control and voltage conversion in practical work, this module will be used.
The interface can control the voltage levels of 3.6-24V at 3.3V or 5V, and after the control terminal is turned on, the controlled terminal will also be turned on.
Strong photoelectric isolation and anti-interference ability. Later, it can drive high-power transistors, MOS transistors, and other occasions that require high voltage driving, or directly drive low-power 24V relays to work.
If it is a pulse signal, please note that the limit of 817 is below 4KHZ. For control signals greater than 4KHZ, please do not use this module as it will not work properly.
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