The AU-20 rod-operated level switch uses a magnetic float and reed switch to provide a dry contact at a selected liquid level. Normally open or normally closed operation can be specified. It is suitable for horizontal or vertical installation, including tanks with limited height.

Body: AISI 304 stainless steel, optionally AISI 316. Float: AISI 316L. Operating temperature: −10 to +125 °C. Maximum pressure: 16 bar. Maximum switching voltage: 400 VAC/DC; switching capacity 60 VA. BSP or NPT connection, minimum 3/8 inch. Cable: 2 × 0.25 mm². The catalogue lists IP68 and explosion-protected construction; confirm the exact version. Applications include marine, bilge, water, fuel, condensate and chemical tanks.