| Model | STT20 | STT25 | STT30 |
| Max. load capacity | 2000kg | 2500kg | 3000kg |
| Load center | 600mm | 600mm | 600mm |
| Max. lifting height | 200mm | 200mm | 200mm |
| Travel speed (without load) | 5.5km/h | 5.5km/h | 5.5km/h |
| Travel speed (with load) | 5km/h | 5km/h | 5km/h |
| Lifting speed (without load) | 35mm/s | 35mm/s | 35mm/s |
| Lifting speed (with load) | 30mm/s | 30mm/s | 30mm/s |
| Lowering speed (without load) | 57mm/s | 57mm/s | 57mm/s |
| Lowering speed (with load) | 57mm/s | 57mm/s | 57mm/s |
| Gradeability (without load) | 7% | 7% | 7% |
| Gradeability (with load) | 6% | 6% | 6% |
| Service height (with battery) | 685mm | 685mm | 685mm |
| Overall length of frame | 2280mm | 2280mm | 2280mm |
| Overall length of frame (with platform) | 2250mm | 2250mm | 2250mm |
| Overall width of frame | 800mm | 800mm | 800mm |
| Wheelbase | 1417mm | 1417mm | 1417mm |
| Fork length | 1150mm | 1150mm | 1150mm |
| Fork outside width | 685mm | 685mm | 685mm |
| Fork inside width | 365mm | 365mm | 365mm |
| Fork thickness | 60mm | 60mm | 60mm |
| Fork height when fork lowered to lowest | 85mm | 85mm | 85mm |
| Min. ground clearance | 5mm | 5mm | 5mm |
| Theoretical width of minimum aisle for right-angle stacking (1200×1000) | 2312mm | 2312mm | 2312mm |
| Min. turning radius (without platform) | 1625mm | 1625mm | 1625mm |
| Min. turning radius (with platform) | 2135mm | 2135mm | 2135mm |
| Front wheel size | 85×70mm | 85×70mm | 85×70mm |
| Drive wheel size | 230×75mm | 230×75mm | 230×75mm |
| Caster wheel size | 130×55mm | 130×55mm | 130×55mm |
| Wheel material | polyurethane | polyurethane | polyurethane |
| Drive motor type | AC series motor | AC series motor | AC series motor |
| Rated output (drive motor) | 1.5kW | 1.5kW | 1.5kW |
| Hoist motor type | DC series motor | DC series motor | DC series motor |
| Rated output (hoist motor) | 0.8kW | 1.2kW | 1.2kW |
| Voltage | 24V | 24V | 24V |
| Capacity | 210Ah | 210Ah | 210Ah |
| Weight | 195kg | 195kg | 195kg |