S273 Capacitance Coolant Level Switch

Featuring an integrated Deutsch DT04-3P connector the S273 is a capacitance type liquid level switch for use in water-based liquids including engine and battery coolants.


It is an active device designed to give an alarm signal if liquid falls below, or rises above, a preset level. It can also be specified with a delay to eliminate false alarms due to turbulence.

The switch is available with either sink to ground or source voltage output. A wide range of customer specifiable options make it suitable for most applications.

For high accuracy, the S273 should ideally be mounted horizontally at the point where an alarm or control signal is required. However, the switch can be mounted vertically – contact Rochester Sensors UK Limited with your application.

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