1. Interface and connection:

Usually, a standard Toslink interface is used. This interface can use plastic optical fiber as an audio jumper. The optical fiber connector is generally a slotted structure, which is easy to quickly and correctly plug and play, making it convenient for users to connect it to audio devices such as amplifiers, speakers, and players.

2. Core functions：

Long-distance transmission: supports 50~200 meters

Photoelectric conversion: The transmitter (DLT21H0) converts the electrical signal (coaxial/HDMI) into an optical signal, and the receiver (DLR21H0) restores the optical signal to an electrical signal.

Strong anti-interference ability: Optical fiber transmission is not affected by electromagnetic interference and ground loops.

Plug and play: No driver is required, compatible with most S/PDIF devices

3. Application scenarios: 

Mainly used in the field of audio transmission, it can be used in home theater systems to realize the transmission of digital audio signals between playback devices and amplifiers, which can effectively avoid electromagnetic interference and ensure audio quality. It can also be used to connect professional audio equipment, such as in small recording studios or live broadcast rooms, connecting audio recording equipment and monitoring equipment, etc., to provide guarantee for high-quality transmission of audio signals.

In summary, DLR21H0/DLT21H0 is a pair of professional-grade optical fiber audio transceivers suitable for scenarios that require long-distance, high-fidelity, anti-interference digital audio transmission. Compared with ordinary converters, they provide more stable signals and longer transmission distances, making them ideal for custom home theater installations, recording studios, and commercial audio systems.