Can a single Liquid Leakage Sensor Amplifiers "K7L" detect more than one liquid leakage?

Yes, it can.

It is possible to detect more than one liquid leakage with a single K7L by connecting sensing bands in parallel with use of terminal blocks

However, be aware that the sensing band where a liquid is leaked cannot be specified.

Note: 1.

When wiring, be sure not to exceed the maximum possible wiring distances for both the connecting cable and the Sensing Band. Exceeding these distances may lead to faulty operation. Connect one Sensing Band to each Terminal Block.

Note: 2.

Not applicable to K7L-AT50D