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- Alpha MK2 Extended 20W vs 5 2.5W
Algolaser Alpha MK2 Extended 20W vs NEJE 5 2.5W
What Alpha MK2 Extended 20W does better (3) and where 5 2.5W wins (0) — every spec side by side.
vs
7.7Power & cutting2.3
6.0Safety3.2
8.2Features & ease of use3.9
Why is Alpha MK2 Extended 20W better than 5 2.5W?
- Laser output power20 W vs 2.5 W8×
- Air assistYes · 5 2.5W: No
- Built-in cameraYes · 5 2.5W: No
Why is 5 2.5W better than Alpha MK2 Extended 20W?
5 2.5W has no measurable advantages in this pair.
Specifications
Side by side
| General | ||
| Laser sources | Blue diode (≈455 nm) | Blue diode (≈455 nm) |
| Motion system | Gantry (XY rails) | Gantry (XY rails) |
| Two laser sources | No | No |
| Wavelength | 450 nm | — |
| Laser power | ||
| Laser output power | 20 W | 2.5 W |
| Work area | ||
| Work area | 400 × 410 mm | — |
| Work area width (X) | 400 mm | — |
| Work area depth (Y) | 410 mm | — |
| Work area (surface) | 1,640 cm² | — |
| Work-area extension kit | Yes | — |
| Speed & cutting | ||
| Max engraving / travel speed | 333 mm/s | — |
| Precision | ||
| Laser spot size | 0.175 mm | — |
| Safety | ||
| Enclosed (fully covered) | No | No |
| Flame / fire detection | No | No |
| Emergency stop button | Yes | — |
| Built-in fume filter / purifier | Yes | — |
| Features | ||
| Air assist | Yes | No |
| Built-in camera | Yes | No |
| Autofocus / auto height | No | No |
| Rotary attachment support | Yes | — |
| Offline engraving (no computer) | Yes | — |
| Water cooling | — | Yes |
| Connectivity & software | ||
| Connections | — | Wi-Fi |
| Wi-Fi | — | Yes |
| Phone app control | — | Yes |
| Compatible software | LightBurn, LaserGRBL | LightBurn, LaserGRBL |
| LightBurn compatible | Yes | Yes |
| Size & power | ||
| Width | 650 mm | — |
| Depth | 730 mm | — |
| Height | 240 mm | — |
| Weight | 6.5 kg | — |
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