5pcs Mini Dot Infrared IR Laser Diode Module 780nm 3mw w/Built-in Driver 6x10mm: Amazon.com: Industrial & Scientific
650nm 660nm Adjusted Red Laser Line Dot Cross Laser Diode Module 3V-5.5V 100mW Laser Dot/Line/Cross Module Focusable 13mmx42mm with US Power Adapter and Heatsink: Amazon.com: Industrial & Scientific