5V laser head laser diode semiconductor laser dot copper tube outer diameter 6MM Black is negative positive red Wavelength: 650NM Power: 5MW outside diameter: 6MM
Pay attention to the safety of the laser battery and prevent others from disassembling the electric power cell to cause short-circuit combustion or battery explosion.
The laser emission principle and the particularity of the production process determine that the laser has the characteristics that ordinary light does not have: three good (good monochromaticity, good coherence, good directionality) and one high (high brightness).
Mainly used for laser toys, various spirit levels, ground level instruments, etc. Making an electronic pointer: When the teacher is giving a lecture, the laser projection point is used to draw students to observe and think.
Electronic level: Let the motor drive the bald head to rotate or twist, and project it into a straight line on the wall for horizontal reference when decorating or posting New Year pictures.