Quick Start Guide  1 
1  Reader Overview 
 
1.1. 
Reader Hardware 
The 3M Toll RFID Reader 6204 is a multi-protocol, multi-regional Radio 
Frequency Identification (RFID) System that operates in the 860 – 960 MHz 
UHF band. The reader is configured at the factory to operate within a 
specific regulatory region (for example: FCC Part 90). 
 
Figure 1 
3M Toll RFID Reader 6204 UHF Reader 
As shown in the following figure, the 6204 supports four Tx/Rx antennas 
(not shown). The reader is also equipped with RS-232 serial and Ethernet 
interfaces. 
 
Figure 2 
3M Toll RFID Reader 6204 Power and I/O Connections