Overview Reviews Product Description TPI ET9S4TS Thermostat Line Voltage, Electrical Ratings: Heat: 22 Amp Res. Product Videos Custom Field Amps 22 Product Reviews Write a Review Write a Review × TPI ET9S4TS Thermostat Line Voltage, Electrical Ratings: Heat: 22 Amp Res Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *