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• ParameterWavelength: 532nm Output Power: 5mW Working Voltage: 3V (two AA/AAA batteries recommended) Duty Cycle: 45 seconds On 15 seconds OFF Working Temperature: ＋10 ℃~＋35 ℃ Laser Shape: Dot Life-Span: > 4000 hrs beneath right use Material and Color: Brass Focusable: N/A Dimensions: ￠12 mm X 50mm(including PCB) Feature: Spring is Negative -, bronze casing is postive + with change and spring at the PCB, can be used to DIY laser pointers The laser module is exact instrument. Before sporting on some laser DIY activities, please examine the technical information first and preserve your eyes before 30mW laser ray. You must know the prospective hazard when doing laser DIY. Please preserve far from direct eye contact to the laserPackage5pcs x 5mW 532nm Green Laser DOT Module

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