3Pcs 1Channel AC 220V Optocoupler Module 220V Voltage Detect 220V Optocoupler Isolation Microcontroller TTL Level 3V-5V auspowers_batchtwo Heat-Resistant Cord Wrappers for Kitchen

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3Pcs 1Channel AC 220V Optocoupler Module 220V Voltage Detect 220V Optocoupler Isolation Microcontroller TTL Level 3V-5V auspowers_batchtwo Heat-Resistant Cord Wrappers for Kitchen3Pcs 1Channel AC 220V Optocoupler Module 220V Voltage Detect 220V Optocoupler Isolation Microcontroller TTL Level 3V 5V Product 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