| Model | HH-1 | HH-2 | HH-4 | HH-6 |
| technical parameters | ||||
| power supply | 220V 50HZ | |||
| Temperature control range | RT+5-100P | |||
| Temperature resolution | 0.1P | |||
| Temperature fluctuation | ±0.5P | |||
| power | 600W | 800W | 1000W | 1200W |
| Studio size (depth x width x height) mm | 160x160x100 | 300x160x100 | 300x300x100 | 470x300x100 |
| Dimensions (DxWxH) mm | 200x200x200 | 200 x 350 x 200 | 350 x 350 x 200 | 350x510x200 |
| Packing size (DxWxH) mm | 260 x 260 x 255 | 255 x 400 x 255 | 400 x 400 x 255 | 400 x 560 x 255 |
| Net weight/Gross weight KG | 2.2/2.5 | 3.3/7.7 | 4.5/5.3 | 6/6.9 |