5 v laser laser diode semiconductor laser dot copper tube 6 mm diameter

Red the positive black is negative

Wave length: 650 nm power: 5 mw diameter: 6 mm

1: to pay attention to the safety of laser batteries, remove the electric power pool to prevent others cause a short-circuit or battery burning explosion accident.2: the particularity of the laser emission principle and production process determines the laser: has the characteristics of ordinary light does not have the merit, good monochromaticity, good coherence, directional well) high brightness (high).

3: it is mainly used for laser toys, all kinds of level, ground wire gauge, etcElectronic pointer pen: when the teacher, with laser projection point for students to think for observation.

Electronic level: let the motor drives the baldheaded twisting or turning, cast into a straight line on the wall, for decoration or Posting pictures do level reference.

Mini LCD projection: demolition of condenser, let the laser can be controlled through the LCD screen, can make clear projection on the walls.

Distance laser listener: let the laser irradiation on the listening room glass, and then receive the glass reflected back to a laser beam, detect the glass of the vibration reduction to voice out of the room.

Distance electric burglar alarm: in the one horn of the need to protect fish ponds or watermelon field in the laser tube and photosensitive resistance, in the other three Angle on reverse side mirror, to form the protection zone.

Distance laser wireless communication: with a pair of laser transceiver respectively in two distant roof, facing each other with the use of single-chip microcomputer serial communication protocol can send and receive files, and connected to the Internet.

This laser by emitting, condenser lens, copper tube core adjustable sleeve of three parts, sent to the user, the three parts have been assembled, lens focal length adjustment well, too, and it has been use super glue

Well, the user can work 5 v dc power on.