Temperature range:-40℃ -- 150℃ Humidity range: 20%— 98 %RH Temperature and humidity control accuracy:±0.5℃；±2.5%RH. Temperature and humidity distribution uniformity: ±2.0℃；±3.0%R.H. Heating time (20℃-100℃): 35min (no load) Cooling time (20℃--40℃): 55min(no load) Inner box size: 400*500*400mm