Cordless players
Cordless optical readers for barcodes.
The wireless connection can be standard Bluetooth or with proprietary radio protocol, in which case the frequency of 433 Mhz is mainly used.
Most cordless players are equipped with a cradle (base) also used for charging for the battery, and connected with USB cable to the host.
Bluetooth readers can be connected directly to the computer if it is equipped with a Bluetooth radio, otherwise they communicate with the base station via Bluetooth and transmit the collected data via USB.
