The Norseman™ XTK facilitates field installation of a thermostat into other x-Max® based products, such as the Norseman™ XB Explosion-Proof Convection Heater. These products may then be stocked standard without thermostats and customer can get a kit supplied when required. The XTK-04 model for space heating applications has a temperature range of -18°C to 40°C (0°F to 100°F).