OLAB water pressure switch, pressure range 0.2 - 1.2 to 2.0 - 6.0 bar, connection: 1/4" - 1/8", self-adjusting, can be connected as opener or closer, different versions see variants.
![542SST0019 - Fig. may deviate](https://www.schweiss-shop.de/images/541pum0177ha.jpg)
Water pressure switch make OLAB, self-adjustable, optionally connectable as opener or closer