What is shown in the video is a 1310nm 150mW polarization-maintaining fiber-coupled laser. The single-mode fiber can also be customized. The laser power supply has a Modulation socket and supports TTL 0~10kHz modulation mode.
The red button is the power button. Turn the key to ON for laser output. When the laser is working, the LED display displays the operating current. Turn the silver rotating button clockwise to adjust the working current of the laser, thereby increasing the laser output power.
