Shenzhen RF link technology is a short-range, high-speed wireless data communication technology. It operates in the unlicensed 2.4 GHz Industrial, Scientific and Medical (ISM) band and can achieve data rates up to 250 Kbps. The technology is based on direct sequence spread spectrum (DSSS) modulation with forward error correction (FEC).
The Shenzhen RF link protocol uses a time division multiple access (TDMA) scheme to allow multiple nodes to share the same channel. Up to four nodes can be active on the channel at any one time, with each node taking turns to transmit or receive data. This allows the system to support full-duplex operation (i.e., simultaneous two-way communications).
In terms of range, the Shenzhen RF link technology has been designed for short-range applications. In an indoor environment with good line of sight conditions, it is possible to achieve a maximum range of 30 m. However, in more realistic conditions (e.g., indoors with obstacles), the range will be reduced to around 10 m.
The main advantage of Shenzhen RF link technology over other wireless technologies is its low cost and easy implementation. The hardware required for a basic system consists of only a transmitter/receiver module and an antenna. No special licensing or certification is required to use the technology, making it suitable for low-cost consumer applications such as wireless keyboards and mice