UHF On-Metal RFID Disc Tag IDTS-D20 (20 mm Round PCB)

A 20 mm on-metal RFID disc tag that reads from a few metres

The IDTS-D20 is a 20 mm round PCB disc for reading at a distance rather than close up. It is listed at approximately 3.5 m on metal, so a handheld user can count tagged tools, panels or valves from a few metres away instead of touching each one. The chip sits under a raised black dome, 4 mm at its highest point, which protects it from knocks.

Two-point mounting

Two 3.2 mm holes, 14.5 mm apart, take a screw or rivet on each side. 3.2 mm is a common clearance size for M3 screws, so standard hardware usually fits. A two-point fixing also stops the tag rotating on vibrating machinery.

Where it fits in the disc range

Choose the D20 when the item has a 20 mm flat face and a 12 mm disc does not give enough range. For a lower profile at a similar listed range, the 28 mm IDTS-D28 is 2.6 mm thick; for a little more distance, the 25 mm IDTS-D25 is listed at about 4 m. Bar tags and other formats are under PCB and ceramic RFID tags.