Specification:
1. Low Temperature turns on. This laser can work in winter for temperature at -25 centigrade
2. High temperature working: this laser can work on summer when the working temperature is over 40 centigrade. 
3. Dust/water-proof cover which will protect the laser when it cuts stones or woods. 
4. Bigger housing for longer duty cycle.
5. 12VDC adapter for more stable power supply

Comparing with 532nm laser modules, this one is better at those areas:
1. wider working temperatuer from -25~45 centigrade
2. stable wavelength, no red bomb. 
3. working in more seriously conditions.

Pecifications:

Escape Room

Haunted House

Bird Scare

Laser Harp

Laser Marking Locating

Laser Pointing

Laser Indicating

22*100  515nm 10mw Green Laser Dot Module for Cutting Engraving Machines 

Features

Low working temperature from - 15 centigrade

Stable output by the green laser diode in

Suitable for green laser level

Used in green laser rangefinder

Feature:
Unique Color of Laser Beam, Pure Green or Light Green
Stable Performance for the laser light is directly from Laser diode not transversed from 808nm laser diode
No IR included like 532nm laser
Output stable at a much broader temperature range
Suitable for wood cutting, construction site, alignment,locating
Can be used in escap room stage lighting