Power: 50mw. Laser wavelength: 650nm. In this case, it is very easy to cause injury. Making electronic pointer pen: when teachers give lectures, they use laser projection points to remind students to observe and think.
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LASER TREE 450nm 5W 4W Adjustable Focus TTL Laser Head DIY Engraving Laser Module for Wood Cutting Tools
Aliexpress UK
3pcs 850nm 3.5mW Mini Infrared Dot Laser Diode Module IR LED 6x10mm. Size: 6x10mm(brass house length). 3x 850nm 3.5mw laser diode module. Notice: It's IR Lasers which can not be seen by naked eyes.You can get the light by night vision or IR detection card.
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NEJE Laser Module 1000mW/1500mW/2000mW 405nm Laser Head Replacement Kit, Adjustable Focus DIY Laser
Aliexpress UK
Laser wavelength: 515nm±5nm. Laser power (constant power):≤ 5mW. Laser working mode: point laser, CW laser. Laser working life: more than 8000 hours.
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LASER TREE Laser Module 10W/20W/30W/40W Optical Power with Air Assist Laser Head TTL Blue Light for Engraver Cutting Wood Tools
Aliexpress UK
Output wavelength: 405nm. Output power: 50mW. These products can be widely used in various power tools, level, locator, rangefinder, sweep leveler, laser marker and other work tools. Structure features: laser tube + lens + heat sink shell.
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Laser Head Adjustable Module Z-Axis Lifting Bracket For Laser Head TTS-55 TTS-10 TTS-20 PRO Laser Machine Device Parts Twotrees
Aliexpress UK
25 W 950nm Multimode Laser Diode Modulewith 0.22NA fiber Model: BMU25-950-02-R25W. • 0.15NA or 0.22NA 105μm core multimode optical fiber. Oclaro's new multimode single emitter based laser. The module includes multimode laser diodes with E2.
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LASER TREE 5W Optical Power Laser Head 450nm Blue Light TTL with Air Assist Module for CNC Laser Engraver Cutting Engraving Tool
Aliexpress UK
Making electronic pointer pen: When the teacher lectures, students with a laser projection point drew concept investigation thinking. Laser remote listener: the laser is irradiated on a glass room eavesdropping, and then receives the laser beam reflected back to the glass, to detect the vibration of the glass out of the room to the sound reduction.
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Twotrees T20 Infrared Laser Module For TTS Engraving Metal Powerful Laser 1064nm Red Laser for Engraving Jewelry Rings Bracelets
Aliexpress UK
Wavelength: 505NM (green light, color similar to the green light of a traffic signal). 1pc 505nm 100mw laser module. Power:<100mW. Input: 220V to 12V, this product includes a 12V adapter.
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Geevorks 10/20/30/40W Laser Module 450nm Engraving Laser Head Adjustable Focal Length High Precision for Laser Engraving Machine
Aliexpress UK
Modulation mode: TTL modulation. Spot Mode: Circular Spot. Input stability: ±5%. Life: 10000h. Output power: R:1W, G:1W, B:3W. Rated power consumption: 65W. Wire length: 250mm.
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High Power 520nm 3W ~ 3000mw Green Coarse Beam Laser Module Bird Repelling Fat Beam Laser 12V PWM Laser Lamp
Aliexpress UK