Check the listing for details. 12V 532nm 50-70mw Green Laser Dot Diode Module with FAN TTL Working Long DIY. Condition: New. Listed at 34.39 USD. 12V 532nm 50mw-70mw Green Laser Dot Module w Auto Temp Control Specification: Output Power 50-70mw Wavelength 532nm Working Voltage 12v Working Temperature -10°C~+40°C TTL yes Laser Shape Dot Focusable N/A Material and Color all metal Lens glass Waterproof N/A Dimensions head: 34X34X50mm currancy board: 50X57X92mm Feature 532nm green laser module! it uses 12v voltage to drive! Pure green ray laser! The power range of this laser is 50mw-70mw! With cooling fans! When the temperature of the laser is more than 35°C, the fans starts to work and release the heat. when the temperature of the laser when is -10°C, it will automatically increase the temperature, which helps the laser get a better working temperature. If you want to operate this module for a very long time, you must add addtional fans for it to keep its working temperature under 30°C. Without fans, it can work contiunously for 10 minutes. If working Longer than 10 minutes, the laser module's output power will be reduced. Package: 1 x 12V 532nm 50mw-70mw Green Laser Dot Module w Auto Temp Control 无标题文档 On Oct-19-21 at 00:32:12 PDT, seller added the following information: