The TM4 is designed specifically for use on metal parts. Its small form factor makes it the perfect tag for tracking laptops, servers, and tools.

The TM4 is durable and withstands hazardous environments up to 400F, including autoclave. This metal-mount RFID tag can be read reliably at 10' when applied directly to metal.


Price includes programming, serialization, rolls, anti-static bags, silica, and packaging. Most orders shipped same business day. Blank roll price significantly lower.

Will this tag work on non-metal parts?

Yes. However, the read range is reduced to around 1 foot.

How do I attach the tag?

A 3M 9472LE adhesive strip is on the back of the tag. The adhesive works well in commercial office environments. Additionally, a super-adhesive/epoxy could be applied to provide a stronger bond.

What do I need to send in to place an order?
  • Serial #'s - either a list or a range of numbers. These tags hold a 24 digit HEX number. We recommend you use it all and encode the beginning with a header. As RFID becomes more prevalent, using '1 through 1,000' will drive you crazy because you will read thousands of other company's tags.
  • Label Type: Yellow, White, or None.
  • Barcode Format: Code 128 is standard.
  • Barcode value: We encode the last six digits and print human-readable. These can be HEX or Decimal. We recommend you use HEX.

Too many questions? See the next FAQ answer.

I'm not sure what I need, I need 1,000 asset tags. Please recommend a tag format.

Here's what we recommend:

  • Yellow Label
  • Code 128 Barcode
  • Last 6 HEX digits displayed
  • Pre-Programmed in the DoD EPC 24-digit Format Using SimplyRFiD's Department of Defense Guaranteed Unique ID

What RFID Readers work with these tags?

All EPC Gen 2 Readers will work. For a great asset-tracking handheld, look at our Wave handheld to get started.

What is the TM4 v2 (2021)

As of May 2021, we are moving to the TM4 version 2 RFID tag. This gives about 50% better read performance than the previous generation TM4. This replaces the Alien Higgs3 with the newer NXP UCode 8 microchip. Nothing else changes.

Best For:

  • Metal


45.0mm x 10.0mm x 3.0mm

Range in Meters (4W EIRP*):

On-Metal - 2.5 meters (8 feet)
Off-Metal - 0 meters (0 feet)


RFID is the fastest way to keep track of your assets and inventory. Our Wave Inventory System is everything you need to track thousands of assets easily.

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