Parameter

Wavelength: 532nm
Output Power: 20mw
Working Voltage: 3 V-3.7 (two AA/AAA batteries recommended)
Duty Cycle: 45 seconds On 15 seconds OFF
Working Temperature: ＋10 ℃~＋35 ℃
Laser Shape: DOT
Life-Span: > 2000 hrs under proper use
Material and Color: Brass
Focusable: N/A
Dimensions: ￠12 mm X 50mm(including PCB)

Feature:
Spring is Negative -, bronze casing is postive +
with switch and spring on the PCB, can be used to DIY laser pointers
The laser module is precise instrument. Before carrying on some laser DIY activities, please read about the technical information first and protect your eyes. You must know the possible hazard when doing laser DIY.
Please avoid direct eye contact to the laser

Package

1x 20mw 532nm green Laser DOT Module