Flow sensors, flow monitors, compact design for adapter, process connection: internal thread M18 x 1.5 for adapter, 4-wire, AC / relay, operating voltage: 85...265 V AC, nominal voltage: 90...240 V AC (45...65 Hz), normally open / normally closed programmable, no / nc progr., plug connection, 1/2 -UNF plug connection, 1 relay output, housing material: V4A (1.4404) V2A (1.4301) PC (polycarbonate) PBT-GF 20 EPDM/X, sensor material: V4A (1.4404) O-ring: FKM 8x1.5 gr 80 Shore A