Assertion: ring's device | /r/CapableOf | apply voltage
Facets:
value: to detect the wiring
type: PURPOSE
value: to the sleeve and second ring
type: TRANSITIVE-OBJECT
Source sentences:
text: Some devices apply voltage to the sleeve and second ring to detect the wiring, and switch the last two conductors to allow a device made to one standard to be used with a headset made to the other.