The FTTH (Fiber to the Home) power meter is a device used in telecommunications and fiber optic technology to measure the power or intensity of optical signals in a fiber optic network. It consists of a photodetector, a display screen, and control interfaces. Its function is to accurately measure and monitor optical power levels, ensuring they are within acceptable ranges. Power meters play a crucial role in network installation, maintenance, and troubleshooting, helping technicians verify signal performance, identify power-related issues, and optimize network efficiency for the seamless delivery of data, voice, and video services in FTTH networks.