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This Class IIIA red diode laser point is a little different -- press the button to tun on, press again to turn off. Perfect for classroom optics
Executive Red Laser Pointer
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Co2 Laser red dot position <5mw 650nm 3-5VDC diode Engraver cutter – American Photonics
This red (650nm wavelength) laser diode module is easily powered by a 5V DC USB power supply or battery and can be used as a pointer, for illumination, and light therapy. Wires for the DC power are soldered to the 6mm brass laser diode housing. The module includes an internal 91-Ohm current limiting resistor, so no additional series resistor or current limiter is required. Simply connect 5V DC power to use! The Red lead is Positive (+), and the Blue or Black lead is negative (-).
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