Which safety feature must be implemented for room temperature thermostats?

The correct choice highlights a crucial safety feature concerning the installation of room temperature thermostats: sealing wire passage holes to prevent drafts. This is essential because drafts can lead to inaccurate temperature readings. If a thermostat is exposed to drafts from outside air or circulating air inside the building, it can cause the system to cycle incorrectly or fail to maintain the desired temperature. Sealing these holes helps ensure that the thermostat functions based on the actual temperature of the room it is meant to control.

Ensuring accurate measurements is vital for achieving optimal climate control and energy efficiency within a space. If the readings are compromised due to drafts, it could lead to energy wastage as the heating or cooling system works harder than necessary to reach set temperatures, resulting in increased utility costs and potential wear on the system.

In contrast, the other options typically do not address the immediate concerns related to the environment in which the thermostat operates and its accuracy. They either imply additional installation requirements or features that may not be universally applicable or necessary for every room temperature thermostat.