RF4 RF-C39 RF-C39L 4K microscope camera and infrared dual-spectral thermal imaging 2-in-1 camera for PCB circuit board soldering observation and phone motherboard short circuit repair. Upgraded RF4 RF-C39L Camera With Fixed Trestle. Adjust the angle and direction at will. RF4 RF-C39 4K HD visible and infrared thermal camera is used with a trinocular stereo microscope for object magnification observation and motherboard fault diagnosis repair, etc.