5pcs 3V 5V 650nm 5mW Adjustable Laser Dot Diode Module Red Laser diode

  FAQ response:

1) What is the resistance value of the resistance on this laser head? 33 ohm

2) How to distinguish between 3V and 5V received? The longer cable is 5V, the shorter cable is 3V

Red positive pole blue is negative pole

Wavelength: 650NM

Power: 5MW

Outer diameter: 6MM

1: pay attention to the safety of the laser cell, to prevent others from demolition burning electric power pool cause a short circuit or battery explosion.

2: The principle of laser emission and particularity generation process determines the laser light with a general do not have the characteristics: namely Miyoshi (color is good, good coherence, direction) a high (high brightness).

3: mainly used in laser toys, all kinds of level meter, instrument, such as ground

Making electronic pointer pen: When the teacher lectures, students with a laser projection point drew concept investigation thinking.

Electronic spirit level: Let motor driven head rotation or twisting, projected in a straight line on the wall for decoration or to post pictures when you do the horizontal reference.

Miniature LCD projector: Remove the condenser, so that the laser can be controlled through the LCD screen, you can produce a clear projection on the wall.

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.

Remote light control anti-theft alarm: the need to protect the fish pond in the corner or the watermelon fields in the launch tube fitted with laser and light-sensitive resistors, in the other three corners of the mirror mounted on the back to form a protective zone.

Laser distance wireless communication: the use of a pair of laser transmitters and receivers are facing each other in two distant roof, the use of single-chip serial communication protocol you can send and receive files, and even networking.

The laser head by emitting die, condenser lens, adjustable sleeve is composed of three parts copper, when sent to the user, these three parts already assembled, but also adjust the focal length of the lens, and has used strong glue stick Well, users connected to 3V/5V DC power to work

★[Precautions for use] (Buyers must read)★

1. The laser is harmful to the eyes. Do not illuminate the eyes. The red light with a power of more than 30mw should not be exposed to the human body. Remember! (If you need to protect your eyes, you can also wear laser protective glasses)