The glass tube is a micro RFID chip under a sealed glass column, and the surface material is non-slip. They have good chemical stability, long service life, and can be immersed in water.
Glass Tube RFID Tag is available in a variety of sizes and frequencies, with a unique ID number, advanced security functions (data integrity check, the encrypted authentication
| Material | Glass |
|---|---|
| Size | 2.12*12mm,2.12*8mm,1.4*8mm,   1.25*7mm,3*15mm,4*32mm or customizable |
| Optional chip | EM4305 |
| Memory | Determined by the chip |
| Frequency | 13.56MHz |
| Protocol | ISO 11784/11785 |
| Reading distance | 0-10cm |
| Working Temperature | -40° to +85°C (-40° to +185°F) |
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