Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to install a digital thermostat [title] Purchase a digital thermostat from a home improvement or hardware store. [title] Turn off the power to your furnace before beginning digital thermostat installation. [title] Remove the cover of the old thermostat.

Ending1: [title] Remove the unit's screw-on cover. [step] W2d appliance models normally have 2 screws on the base side and 4 screws on the side. Ending2: [title] Set your thermostat on the circuit breaker (next to the furnace). [title] Pull the plug out of the unit and remove the cover from the new thermostat. Ending3: [step] ( the exception to this rule is the temperature meter. ) [title] Insert the power cord into the thermostat housing. Ending4: [substeps] Most of them simply pop off easily with a little force. [title] Remove the screws from the screw terminals in the sub-base of the old thermostat and remove it from the wall.

Answer format: ending1/ending2/ending3/ending4