Assertion: thermostat | /r/CapableOf | use a mercury switch
Facets:
value: to complete the circuit
type: PURPOSE
value: as an alternative
type: PURPOSE
Source sentences:
text: As an alternative, some thermostats instead use a mercury switch on the end of the bimetal coil.
text: In the olden days thermostats were simple switch devices, that used Mercury Switches to complete the circuit and turn on the heat/AC.