This Honeywell T498 Electric Heat Thermostat provides line voltage control of electric heating systems such as electric baseboards, convectors, and fan forced heaters (resistive rated loads). It includes a bimetallic temperature sensor and a Micro Switch mechanism. It is easy to install and has color coded leads. It has a rugged plastic mounting base and it mounts on a standard 2 x 4 inch outlet box or a 4 x 4 inch junction box.