This would be for a high-temperature environment, and as small a size as possible would be better.
Omni-ID‘s FIT 200 tag is a small, passive ultrahigh-frequency (UHF) tag that can be attached to or embedded in metal. It operates at a temperature range of -40 degrees to +85 degrees Celsius (-40 degrees to +185 degrees Fahrenheit), and can withstand a long-term maximum temperature of 120 degrees Celsius (248 degrees Fahrenheit) and a short-term maximum of 150 degrees Celsius (302 degrees Fahrenheit). The tag has a read range of about 8 feet with a fixed reader, and 4 feet with a handheld.
Unfortunately, it would not really be feasible to tell you the best tag for tracking weapons without first knowing more about your specific requirements. Often, there are tradeoffs made, depending on what features of a system are considered essential and what would merely be nice to have. For example, you say you want a tag of a small size, but that would reduce your read range. High-frequency (HF), low-frequency (LF) and RuBee might be good solutions for your needs as well. It would depend on the read range desired, as well as other factors.
—Mark Roberti, Founder and Editor, RFID Journal
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