The Meister 30XM0008XG15S is a DWM series piston-type flow switch featuring a G1/2 brass body, an 8 L/min switch point (for water), and a magnetic normally open (NOC) reed contact. Utilizing a magnetic coupling piston design for reliable low-leakage performance, it is ideally suited for dry-run protection and flow monitoring of clean liquids in industrial cooling, lubrication, and machine tool systems.