| System | Forced air convection | | | |
| Operating temperature range | -10°C~+50°C | | | |
| Temperature adjustment accuracy | ±0.3°C (refrigerator in continuous operation) / ±1.0°C (refrigerator in cycle operation) | | | |
| Temp. distribution accuracy | ±1.0°C (refrigerator in continuous operation at 37°C) | | | |
| Max. temp. reaching time | 20~50°C ~20min | | 20~50°C ~30min | Data unavailable |
| Minimum temp. reaching time | 20~-10°C ~ 45min | 20~-10°C ~55min | 20~-10°C ~65min | Data unavailable |
| Interior material | Stainless steel | | | |
| Exterior material | Chrome free electronic galvanized plated steel plate chemical proof baking finish | | | |
| Observation window | --- | W516 x H416mm (with key) | --- | Data unavailbale |
| Heat insulation material | Styrene foam | | | |
| Refrigerator | Air-cooled fully closed compressor 250W | | Air-cooled fully closed compressor 300W | |
| Refrigerator medium | R134A | | R404A | |
| Defrosting mechanism | Manual ON / Auto OFF, Timer operation, Cycle operation | | | |
| Blower fan | Axial fan | | | |
| Heater | Iron-chrome wire heater: 550W | | Iron-chrome wire heater: 750W | |
| Sensor | Platinum resistance temperature detector: Pt100Ω (temp. controller), K-thermocouple (overheat prevention device) | | | |
| Cable port (right side) | I.D.: 32 mm | I.D.: 50 mm | I.D.: 32 mm | I.D.: 32 mm |
| Temperature control | PID control | | | |
| Temperature setting | Digital setting with ?? keys | | | |
| Temperature display | Measured temperature: 4-digit orange LED digital display + VFD fluorescent display | | | |
| Timer / timer resolution | 0 min. ~ 999 hrs. 59 min. / 1 min. | | | |
| Operation function | Fixed temperature, auto stop, auto start, program (up to 32 steps, repeat operation) | | | |
| Additional functions | Timer function (accumulated time to 49,999 hrs), calibration off-set function, clock display | | | |
| Safety device | Self diagnostic function (Temp. sensor error, Heater disconnection, SSR short-circuit, Main relay error, Automatic overheat prevention function), Key lock, Over current ELB, Overheat prevention device | | | |
| Internal dimensions W x D x H | 600 x 477 x 500 mm | | 600 x 477 x 1000 mm | |
| External dimensions W x D x H | 710 x 645 x 913 mm | | 710 x 645 x 1630 mm | |
| Internal capacity | 143L | | 286L | |
| Shelf plate load | 15kg / pc. | | | |
| Shelf rest step number / pitch | 13 steps / 30mm | | 23 steps / 30mm | |
| Power supply (50/60Hz) | AC115V 9A AC220V 5.5A | AC115V 10.5A AC220V 7.5A | AC115V 10.5A AC220V 6A | AC115V AC220V |
| Weight | ~89kg | | ~ 120kg | |
| Shelf / Shelf brackets | 3 pcs. / 6 pcs. stainless steel punched metal | | 5 pcs. / 10 pcs. stainless steel punched metal | |
| Door keys | --- | 2 keys | --- | 2 keys |
| Optional items | Stand, additional shelf, cable port (ø30/50mm), recorder, warning light combination (stand-by/operation/error), observation window, external communication function (RS485), temperature output terminal (4-20mA), external alarm output terminal, time up output terminal | | | |