|  |  |  |  |  | 
| Internal Dim. W x H x D (cm) | 50x60x50 | 50x75x60 | 60x85x80 | 100x100x80 | 
| External Dim. W x H x D (cm) | 95x150x105 | 95x165x115 | 105x175x135 | 145x190x135 | 
| * Temp. & Humi. Range | 0 ℃;  -20 ℃ ;  -40 ℃ ;  -60 ℃ ;  -70 ℃~100 ℃(+150 ℃)   10%  ~  98% RH | 
| 
 | Temp. & Humi. Constancy | +(-)0.2℃  ;  +(-)2.5%RH | 
| Indication Resolution | 0.01℃    ;    0.01%RH | 
| 
 | Exterior | Stainless Steel Plate + Powder coated | 
| Interior | SUS#304 Stainless Steel Plate | 
| Insulation | PU & Fiberglass Wool | 
| Micro Controller | CLCD OYO-7756U/TEMI-880 | 
| Power Source [K.W.] | AC 1ψ 220V; 3ψ 220/380V  60/50Hz |