| Model | DRK661A | DRK661B | DRK661C |
| Furnace Size | 200×120×80 | 300×200×120 | 300×200×200 |
| Dimensions | 480×400×570 | 590×520×620 | 520×680×730 |
| Furnace Volume | 2L | 7.2L | 12L |
| Furnace Material | Ceramic material | ||
| Maximum Temperature | 1200°C | ||
| Operating Temperature | ≤1100℃ | ||
| Temperature Control Instrument | Program PID temperature controller | ||
| Temperature Control Accuracy | ±1℃ | ||
| Temperature Rise/Fall rate | ≤45℃/min, 1000-300℃≥5℃/min | ||
| Heating Element | Iron-chromium-aluminum heating alloy wire (OCr21A16Nb) | ||
| Voltage | AC220V 50HZ | ||
| Rated Power | 2.5KW | 3KW | 4KW |
| Working Current | 12A | 14A | 19A |
| Furnace | Cold rolled steel shell/stainless steel inner door, double layer, with fan | ||