Acmer · Diode laser
Acmer P1 S Pro 20W
Inexpensive open diode laser with 20 W and a 38 x 35 cm area. Plenty of power per euro, but sparse manufacturer data and no safety equipment.
Ideal for: Beginners on a small budget with a well-ventilated workspace.
Open device: You need laser safety glasses for the matching wavelength while working, and so do onlookers. More at Laser safety.
Price in the manufacturer's shop€283, Basic package 20 W6 W from €149As of 26 Oct 2026, can change dailyThere is no manufacturer's shop price for your region, the EU price is shown.
Pros and cons
Pros
- 20 W with air pump for around €263
- Limit switches on X and Y axes
- same platform from 6 to 48 W, modules can be retrofitted
Cons
- open frame without enclosure, fume extraction and camera in the base version
- no information on safety sensors and laser class
- contradictory speed figures on the product page
Specs
| Price range | under €500 |
|---|---|
| Price in the manufacturer's shop | €283, Basic package 20 W; 6 W from €149 (As of 26 Oct 2026) |
| Laser type | Diode laser |
| Laser source | Diode 20 W optical (wavelength: not specified by the manufacturer); also available as 6, 10, 36 and 48 W |
| Power (optical, main source) | 20 W |
| Work area | 380 × 350 mm |
| Dimensions | 575 × 560 × 200 mm |
| Weight | not specified by the manufacturer |
| Construction type | Gantry |
| Enclosure | open |
| Laser class | Class 4 (derived, manufacturer does not state a class) |
| Speed (max.) | 167 mm/s (10,000 mm/min) |
| Cutting according to the manufacturer | up to 25 mm plywood, 20 mm black acrylic, 8 mm MDF (manufacturer table, passes not stated) |
| Air Assist | Air pump included (from 20 W) |
| Camera | optional (camera pack or A500 LightBurn camera) |
| Fume extraction | no, open frame; enclosure optional (enclosure package or R20) |
| Rotary attachment | optional (rotary pack, M4 4-in-1 chuck) |
| Software | Acmer Studio, Acmer App, LightBurn, LaserGRBL |
| Connectivity | USB, Wi-Fi (app), microSD card (according to retailer and test) |
| Materials (according to the manufacturer) | Wood, Plywood, MDF, Paper, Leather, Acrylic (opaque) |
Source: Manufacturer or retailer specifications, As of 10/2026. Cutting figures are manufacturer values under ideal conditions.
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