Specifications:
Lead Length: 7cm
Head Maximum diameter: 12mm
Rotating parts diameter: 8.2mm
Device parts Length: 23mm
Operating voltage: 4.5 V   51 Resistance
In the ideal case (no dust, no fumes, no barrier), the laser transmission distance is infinite.
The laser head in the case of high air quality, operating current to 20MA, the transmission distance can reach more than 1KM;
In general, cloudy night, exposure to 500 meters away from objects, it is clearly visible;
For a closer distance, even in the sun of the day, shone on the pavement,outside the building,it is also clearly visible.
Application: production of electronic pointer pens, electronic tuner, lights, remote control, instrumentation.
Package Included:      
2Pcs Red Laser Head