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3Pcs 1Channel AC Optocoupler Module 220V Voltage Detect Optocoupler Isolation Microcontroller TTL Level 3V-5V

KWD 4.500
– 1 +

Special Features

  • 1 Channel 220V AC optocoupler module can be used to detect the presence or absence of 220V AC power
  • The output TTL level can be detected by a microcontroller, stabilizing the output of high and low levels (NPN output)
  • When detecting 220V input, the LED light is on, and the optocoupler is conducting and outputting a low level
  • When there is no 220V input, the LED light does not light up, the optocoupler is not connected, and the output is pulled high by a resistor
  • The output power supply can be DC: 3V~24V, or it can be connected to a PLC 24V level

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