We should have surveillance cameras in public places because they ensure public safety. ... Through surveillance cameras, the police can both prevent crimes from happening and can quickly solve criminal cases with material evidence. In addition, surveillance cameras protect against property theft, and vandalism

Senin, 14 Mei 2018

Take Now US $113.91 5.5W 450nm Laser Module Kit Blue Violet PWM TTL Adjustable Focal Length with Power Supply & Driver






5.5W 450nm Laser Module Kit Blue Violet PWM TTL Adjustable Focal Length with Power Supply & Driver

[33014166350] What is in Package? 1 x 5.5W 450nm Blue Laser Module with Cable 1 x Control Driver Board 1 x DC 12V Power Adapter 1 x Goggle Parameter: Cutting thickness: less than 3 cm Laser wavelength: 450nm (Blue violet light) Spot pattern: point Focal length: Adjustable Output power: 5.5W Heat dissipation method: forced air cooling Voltage: DC 12V Working temperature: 10 to 40 degrees Celsius Driver module: TTL, PWM Lens material: special optical coated glass Control interface: 2 * 2.54 (TTL control, PWM power control switch) Cable length: 40cm What materials can be engraved? Wood, some plastics, paper, bamboo, horns, thin leather (wallet), rubber stamp, photosensitive stamp, printing paper (as long as it can be used for engraving, less material can be cut), sponge paper and other materials that are easy to burn. Brushed surface 304 stainless steel (please use black pen to polish the surface before engraving). What kind of material can be cut? Sponge paper, thin leather, printing paper, Plywood (we tested on 3mm yet) 


US $119.90

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