Specifications:
- Function: Testing whether AC 220V exists
- Output TTL Level: can use to test, voltage is 3-5V
- Adaptive to PLC 24V level
- Output TTL level can be detected with the microcontroller. The power supply can be 3-5V
- Can also access the PLC 24V level
- The 2P 5.0 terminal is connected to the 220VAC
- The 3P terminal is connected to the microcontroller input
