Laser sensor Module 650nm 6mm 5V 5mW Red Laser Dot Diode Copper Head for Arduino
works as required
easy to use with pulse out signal.
30V 2A 110V Variable DC Power Supply Precision Adjustable Digital Lab Grade 302D
Handy variable power supply
I bought this item for my lab and it works great. Handy for all my hardware projects. Will buy more for other uses.
Verilux Happy Light Mood Focus 5K Natural Spectrum Energy Lamp Therapy Vitamin D
Does not have vitamin D therapy a claimed.
This light does do what it says and it is good quality but it does not have the Vitamin D spectrum as a therapy lamp.