an assembly includes a receptacle and a sensor body . the receptacle includes an orifice for receiving the sensor body . at least one tab is located on the receptacle or sensor body to engage a feature such as a notch on the other . the sensor body is adapted to be inserted into the orifice . at least one prominence may be included on the receptacle or sensor body to lift the tab out of the feature to release the sensor body from the receptacle when the sensor body is rotated with respect to the receptacle .