4. Performance specifications 1. Temperature range: RT+40 -70 2. Humidity range: 90% RH 3. Temperature control accuracy: ± 3 *Note: The performance guarantee of item # 5 above requires testing at a distance of 1/6 of each wall surface in the testing area, and must be measured after stabilizing with temperature and humidity for 30 minutes 4. Equipment placement space: at least 207 two hundred and seven 201cm (W H D) 5. Power supply: AC220V 50HZ 5 System structure 1. Heating system: Scaled stainless steel electric heating tube 2. Humidification system: glass nozzle 3. Temperature sensing system: Made of stainless steel SUR304Pt100 4. Control system: The control system adopts a P.I.D controller, which controls temperature and humidity simultaneously a. Controller specification: Accuracy: Temperature ± 2.0 +1 digit, with upper and lower limit standby and alarm functions 5. Box material Inner box material: SUS # 304 mirror stainless steel plate Outer box material: SUS # 304 stainless steel plate