If you want to buy a laser module for laser positioning， pay attention to this 532 ZC02 5mw Green Laser Module for Laser Positioning Laser Range Measurement. This laser module comprises an anodized aluminum and a durable and solid housing. It is custom-made and standard designed， excellent and high-effective. It can keep bright for 24 hours at 25 degree Celsius. If the machine is in heating condition， you’d better turn it off for cooling and reuse it after a while， so that it will have a longer lifespan. Altogether， it is great for different laser applications， such as laser pointing， laser gun sights， laser positioning， range measurement， medical equipment and many other industrial usage.                                    Features             Made of solid aluminum housing<br> Custom-made and standard designed<br> You’d better turn it off for cooling and reuse it after a while if the machine is hot<br> Great for electronic enthusiasts<br> Suitable for laser pointer pens， laser flashlights， laser positioning， range measurement， medical equipment and so on   <br>                                                            Specifications             Material     Aluminium    <br> Body Color     Black    <br> Light Color     Green    <br> Output Wavelength     532nm    <br> Output Power     5mW    <br> Operating Voltage     DC 3V    <br> Working Current     300mA-450mA    <br> Operating Temperature     +20℃ ~ +30℃     <br> Storage Temperature     -20℃ ~ +60℃    <br> Dimensions     (2.91 x 1.30 x 1.30)" / (7.4 x 3.3 x 3.3)cm (L x W x H)    <br> Weight     4.76oz / 135g       <br>                                                             Package Includes            1 x Module<br>1 x Power Cord<br>1 x Bracket<br>