Main Technical Parameter: Model TH-100 TH-225 TH-500 TH-800 TH-1000 Internal dimension (mm) 450*450*500 500*600*750 800*700*900 800*1000*1000 1000*1000*1000 Overall dimension (mm) 1050*880*1440 1050*1020*2000 1320*1320*2170 1470*1520*2315 1670*1520*2315 Technical structure Temperature range -20~+150 Low type : -40 :-60 : -70 Humidity range 20% ~ 98% RH Temperature fluctuations ± 0.5 Temperature deviation ± 2.0 Humidity deviation ± 2.5% RH Heating rate 3 / min Cooling rate 1 / min Control system Controller 5.7" programmable color display touch screen controller Controller optional languages are English, German, French, Russian, Spanish, Korean, Japanese. PC Link with software, R-232 interface Temperature Sensor PTR Platinum Resistance PT100O/MV A-class Temperature Resolution ± 0.001 Humidity sensor Dry and wet bulb sensor Humidity Resolution ± 1%RH Heating system Independent Nichrome electronic heating system Cooling system French TECUMSEH compressor Humidification system External isolation, stainless steel surface evaporation humidifier Dehumidification system Evaporator Water supply system Automatic water supply, Water purification system, Water saving Circulatory system Cold resistance and low noise centrifugal wind wheel Material Exterior material Steel Plate with protective coating Interior material SUS304 stainlesssteel Insulation window Double thermostability silicone rubber sealing Standardconfiguration 1 Cable hole (F 50,) cover, 2 sets of shelf, 2 protector tubes, 1 overflow water tube,1 copy of operating specification Timing Function 0.1~999.9 (S,M,H) settable Power Supply AC220V/AC380V 50HZ Three-phase five little system Ambient Temperature 5~+30 =85% RH Standard IEC60068-2-1;IEC60068-2-2;GB/T2423.1-2001; GB/T2423.2-2001