Normally Open (NO) refers to the state of an electrical switch contact which stays open until a preset threshold has been met and the switch closes, e.g. a NO pressure switch set at 10 bar will close once the pressure exceeds 10 bar.
- DPS300 User Switchable Pressure Range, Volts or Current Output Low DP Sensor
- Email notifying multiple 4m high water tanks level controller
- Harbour seawater level sensor with digital display & relay outputs
- 25m borehole submersible pump level indicator and control switch with level sensor
Request info on alarm relay settable measurement products for your application.
Measurement Signal Related Terms
More pages related to measurement signal technical terms.