Specification Brand : YILUBAO BulletPoint1 : Wavelength(nm): 532 BulletPoint2 : Output Power(mw): 50 BulletPoint3 : Working Voltage: 3.0V-3.7V BulletPoint4 : Working Current: <300mA ExternallyAssignedProductIdentifier : 3754919059648 IncludedComponents : see details ItemName : Industrial/LAB 532nm 50mW Line Green Laser Module Reticle/Locator ItemTypeKeyword : 1000-volt-tool-sets Manufacturer : YILUBAO Material : Brass ModelName : 532nm ModelNumber : 532nm OperationMode : Automatic PowerSourceType : Adapter ProductDescription : Parameter: Wavelength(nm): 532 Output Power(mw): 50 Working Voltage: 3.0V-3.7V Working Current: <300mA Duty Cycle: 45 seconds On 15 seconds OFF Working Temperature: +10 ℃~+35 ℃ Laser Shape: Line Material and Color: Brass Dimensions: 12*34mm Feature: This laser locator/module is widely used in clothes cutting, wood cutting, mechanical positioning The laser module is precise instrument. Before carrying on some laser DIY activities, please read about the technical information first and protect your eyes before laser ray. You must know the possible hazard when doing testament, experiment or laser DIY. Please avoid direct eye exposure to the laser beam and wear 532nm protection glasses when your operate this laser module. Attention: the red wire is connected with positive "+", black wire is negative"-",and at the same time, please press the button on the driver board, then the laser can work.