Three 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
Specifications:
Package
Contents:
1 x Optocoupler
Isolation Module
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