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  3. S2 12W vs Ray7 7.5W

Acmer S2 12W vs Longer Ray7 7.5W

What S2 12W does better (1) and where Ray7 7.5W wins (4) — every spec side by side.

Acmer S2 12W
Acmer · 2025S2 12W
6.2Score
1 advantage≈ US$215
vs
Longer Ray7 7.5W
Longer · 2026Ray7 7.5W
7.0Score
4 advantages≈ US$230
Higher score
6.7Power & cutting4.6
3.5Speed8.0
8.7Precision5.7
4.8Work area5.3
3.2Safety6.9
5.7Features & ease of use6.9

Why is S2 12W better than Ray7 7.5W?

  1. Laser output power12 W vs 7.5 W+60%

Why is Ray7 7.5W better than S2 12W?

  1. Max engraving / travel speed167 mm/s vs 600 mm/s3.6×
  2. Work area (surface)900 cm² vs 946 cm²+5%
  3. Flame / fire detectionNo · S2 12W: Yes
  4. Work area depth (Y)300 mm vs 310 mm+3%
Specifications

Side by side

Acmer S2 12WAcmer S2 12W≈ US$2156.2
Longer Ray7 7.5WLonger Ray7 7.5W≈ US$2307.0
General
Laser sourcesBlue diode (≈455 nm)Blue diode (≈455 nm)
Motion systemGantry (XY rails)Gantry (XY rails)
Two laser sourcesNoNo
Laser power
Laser output power12 W7.5 W
Work area
Work area300 × 300 mm305 × 310 mm
Work area width (X)300 mm305 mm
Work area depth (Y)300 mm310 mm
Work area (surface)900 cm²946 cm²
Speed & cutting
Max engraving / travel speed167 mm/s600 mm/s
Precision
Laser spot size0.06 mm0.06 mm
Positioning accuracy—0.06 mm
Safety
Enclosed (fully covered)NoNo
Flame / fire detectionNoYes
Emergency stop button—Yes
Features
Air assistYesYes
Built-in cameraNoNo
Autofocus / auto heightNoNo
Rotary attachment supportYes—
Offline engraving (no computer)—Yes
Connectivity & software
Connections—Wi-Fi
Wi-Fi—Yes
Compatible softwareLightBurn—
LightBurn compatibleYes—
Size & power
Width490 mm—
Depth500 mm—
Height195 mm—
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