Process Heating XTWA-12 – Explosion-Proof Air Sensing Thermostat (Process Heating Applications) More Info XTWL – Explosion-Proof Liquid Sensing Thermostat More Info XTB-12 – Explosion-Proof Remote Sensing Thermostat (Process Heating Applications) More Info XTK-12 – Thermostat Installation Kit (Process Heating Applications) More Info