Model ThermoStableTM STH-155 ThermoStableTM STH-305 ThermoStableTM STH-420 ThermoStableTM STH-800 Temp. Range -20℃ to 100℃ Humidity Range 30% to 98% RH Compressor 7/8HP 1.5HP 1.5HP 3HP Heater for Temp. 1.5 kW 2.0 kW 2.2 kW 2.5 kW for Humi. 2.0 kW 3.0 kW 3.0 kW 3.0 kW Model ThermoStableTM STH-L155 ThermoStableTM...