650nm 5mw Laser Diode Module Red Korean Qsi Original Factory Number Photoelectric Sensor Light Emitting Tube To56metal Packaging - Instrument Parts & Accessories - AliExpress
QSI 635nm 5mW Laser Diode QL63D4SX-ND Red 40℃ without Window LD TO18 Φ5.6mm
650nm 5mw Laser Diode Module Red Korean Qsi Original Factory Number Photoelectric Sensor Light Emitting Tube To56metal Packaging - Instrument Parts & Accessories - AliExpress