650nm Laser Diode Rotary Switch The pins labelled BLK and

The pins labelled BLK and GRN correspond to the coloured wires on the FTDI cable

2mm Support remote control type  Fixed code

CH341A and TL866

Guarding for Overvoltage Protection

DO Digital Out Pin for Digital Output

650nm Laser Diode Rotary Switch The pins labelled BLK andThis is a 5 mW laser diode module that emits a small intense focused beam of visible red light. The module can be used with an Arduino and photoresistor module to perform basic remote signaling. It is breadboard friendly and low cost having a wavelength of 650 nm and an operating voltage of 5 V. The laser head is composed of a light emitting tube, condenser lens, and adjustable copper sleeve and it is assembled when delivered, the focal length of the