Y26 wiring diagram of various models
![XKC-Y26-V](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
High and low level output drive small electric relay (coil current ≤100mA) working principle
1.When the black line is suspended, it is positive output:
When liquid is sensed, the transistor cuts off and outputs a high level, and the relay does not pull in when it is powered off,
When no liquid is sensed, the transistor turns on and outputs a low level, and the relay is energized and closed;
2.When the black wire is grounded (connected to the negative pole of the power supply 0V), it is a reverse output:
When liquid is sensed, the transistor turns on and outputs a low level, and the relay is energized and closed;
When no liquid is sensed, the transistor cuts off and outputs a high level, and the relay does not pull in when it is powered off;