Programmable temperature and humidity chamber box structure: 1 wall material: high quality stainless steel sand; inner wall material: high quality stainless steel mirror. 2 insulation materials: PU insulation layer using high temperature fire and high density fiber cotton insulation, polyurethane foam, lightweight, durable, corrosion and use the new design of the K-type anti-sweat duct system attached to the test zone 3 Adjustable stainless steel disk groups, single load of not more than 30 kg. 4 door reasonable position to set up a transparent window for observing changes in indoor sample. 5 multi-layer hollow glass observation window, the inside of glue chip conductive film, a transparent, heat insulation, easy to produce steam frost and so on. Using double high temperature resistance between the door and the cabinet 6 devices, anti-aging high tensile airtight seal to ensure that the test area. And no reaction doorknob operation easier. 7 at the bottom of the machine can be equipped with high-quality fixed PU wheels, the machine can be easily moved to the specified location, and finally fixed casters. The control section 8 equipment design in the right equipment, the distribution of temperature controller, control switch, easy to operate, simple and easy to maintain. Model specifications and parameters can program temperature and humidity chamber: the model WHTH-408L box size: W × H × D 600 × 850 × 800 Dimensions: 1170 × 1710 × 1270 control: temperature and humidity balance method (BTHC ) PID intelligent temperature control range: 0 ℃ ~ 150 ℃, -20 ℃ ~ 150 ℃, -40 ℃ ~ 150 ℃, -70 ℃ ~ 150 ℃ Humidity: 20% ~ 98% RH temperature and humidity uniformity: ± 2 ℃ , ± 3% RH temperature and humidity fluctuation: ± 0.3 ℃, ± 2.5% RH heating rate: ≥3 ℃ / min cooling rate: ≥1 ℃ / min in the box Material: SUS304 stainless steel bright Carton Material: SUS304 brushed stainless steel plate cold rolled steel or rust treatment Insulation Material: superfine wool + polyurethane foam refrigerator: Closed France Taikang (or semi-enclosed Germany Copeland) compressor refrigerant: R23 / R404A condensing mode: air / water heat control: nickel-chromium alloy stainless steel tube heater airflow mode: broadband-type forced air circulation (on the lower intake) interface: LCD touch screen, the English switch (Korea TEMI880) operating mode: constant operation, the program running the program memory capacity : 120 Group programmable, each program segment maximum 999 Resolution: Temperature: 0.1 ℃; Humidity: 0.1% RH communication functions: RS-232 interface subsidiary function: upper and lower alarm, self-diagnostics, alarm display (fault reasons), timing device (Switcher) Standard configuration: an observation window, test holes 1, the sample holder two layers, a fluorescent, water tank a safety device: no fuse switch, anti-dry device, water system protection devices, Limit high temperature protection, temperature deviation alarm, over voltage, overload, lack of water, lack of equal protection Power Configuration: 220V / 380V 60 / 50Hz (Note: The above parameters for the standard model, if you have special requirements, we can follow your needs to create products that match your use.