The LS309-51 is usable for Oils and Chemicals and has an operating temperature: -30° …+130 °C Sealing IP65.
The LS509-51 level switch is suitable for water, drink water and boiling waters or boilers with a working temperature range of -30°…+110 °C. Sealing IP65.
The level switch with side entry LS809-51 is applicable in water or coolant. Operating temperature -30°…+105°C. Sealing IP65.