8pcs PC817 2 Channel Optocoupler Isolation Board Voltage Converter 3.6-30V Driver Photoelectric Isolated Module 817 Voltage Isolation Module sold2025 hit the two outer buttons

hit the two outer buttons at the same time to turn off the alarm

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8pcs PC817 2 Channel Optocoupler Isolation Board Voltage Converter 3.6-30V Driver Photoelectric Isolated Module 817 Voltage Isolation Module sold2025 hit the two outer buttons8pcs PC817 2 Channel Optocoupler Isolation Board Voltage Converter 3. 6 30V Driver Photoelectric Isolated Module 817 Voltage Isolation Module PC817 Optocoupler Module can achieve an interface with a voltage level of 3. 6 24V controlled by 3. 3V or 5V. After the control terminal is connected, the controlled terminal will also be connected. Strong photoelectric isolation and anti interference ability. Later, it can drive high power transistors, MOS