AEG ARE H9 HF User Manual page 17

6.4.3 Online/USB H, Online/BT H
handshake mode
The "online/USB H" or "online/BT H" mode has a similar to the "online/USB"
with the difference that a read transponder code will not be sent immediately to
the host (PC, PDA, etc.).
First the reader checks if a connection to the host is established before it sends
the transponder code.
---------------------------------------------------------------17/51---------------------------------------
*)
or Online/Ser. H mode –
*)
only with optional Bluetooth module
**)
online/ser. for Rs232 version