System Components
3-17
The IT2221 Tag is designed to be mounted inside a vehicle on the windshield (see
Figure 3-8). This tag has no visual displays or indicators and is used in all applications
where driver feedback is not necessary. The tag can be used on any vehicle.
Figure 3-8 Alternative Mounting Locations for IT2221 Tag
The remainder of this section describes the IT2221 Tag function and features.
Functions
The IT2221 Tag has the following technical and functional capabilities:
• Built-in self-test (BIST) capability to indicate random access memory (RAM)
failure or low battery
• Operational life of eight years, from time of manufacture
• -20°C to +75°C (-4°F to +167°F) operating temperature
• 915-MHz band operation
• 300kbps data rate transfer
• Read/write capability and 16 pages (256 bytes) of RAM
• Full data retention provided during a power loss
• Eight-year battery from time of manufacture
• Data protection using read and write passwords for each individual page
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