RFID Asset & Tool Tracking
Build an RFID asset tracking system: on-metal, ceramic and tie-on tags matched to each asset, handheld audits, smart cabinets and IP67 HF heads for tooling.
ValenID · valenid.com · sales@valenid.com
ST-120 Compact UHF RFID Cable Seal, Short-Range, Steel Wire
Small single-use UHF cable seal with a 36 × 23 × 11 mm ABS head and 280 mm steel wire, read at close range (0.3 m fixed, 0.1 m handheld) for one-at-a-time checks.
- Compact 36 × 23 × 11 mm ABS head for latches, valves and meter boxes
- 280 mm × 1.8 mm steel wire with a one-way steel-ball lock
- Close-contact read range: 0.3 m on a fixed reader, 0.1 m on a handheld
- Alien Higgs-9 chip across 860–960 MHz for US and EU readers
- Must be cut to remove, leaving visible evidence of opening
- Frequency
- 860–960 MHz
- Chip
- Alien Higgs-9 (EPC Gen2)
- Read range
- 0.3 m (4 W fixed reader)
- Handheld range
- 0.1 m
- Seal head
- 36 × 23 × 11 mm, ABS
- Wire
- Steel, 280 mm (11 in) × Ø1.8 mm
Reply within 24 hours Tested before dispatch Worldwide shipping
Compact UHF RFID Cable Seal, Short-Range, Steel Wire: overview
The ST-120 is a compact, single-use UHF RFID cable seal for places where a large seal head would get in the way: meter boxes, cabinet latches, valve handles, instrument covers and bag closures. The ABS head measures 36 × 23 × 11 mm, and it uses the same 280 mm steel wire, 1.8 mm in diameter, as our larger ST-110.
Locking is one-way. The wire loops through the fitting and into the head, a steel ball grips it, and it cannot be pulled back out. To open the sealed item, the wire has to be cut, which is plain to see on inspection.
The tag inside uses an Alien Higgs-9 chip across 860–960 MHz, but its short read range is the defining trait: 0.3 m with a 4 W fixed reader and 0.1 m with a handheld. Treat it as a close-contact seal. An inspector holds the reader right at the seal to confirm its ID, and neighboring seals are unlikely to answer by mistake.
Integration notes
Because the range is so short, the ST-120 does not suit drive-through portals; use the ST-110 where seals must be read from a vehicle lane. For checks at a desk or counter, bring the seal to a UHF desktop reader. The datasheets list the head as both 36 × 23 × 11 mm and 36 × 26 × 11 mm, so we confirm the current dimension with a sample.
ST-120 specifications
RF & chip
| Frequency | 860–960 MHz |
|---|---|
| Chip | Alien Higgs-9 |
| Air interface | EPC Gen2 / ISO/IEC 18000-63 passive UHF |
Read performance
| Fixed reader (4 W) | 0.3 m |
|---|---|
| Handheld reader (Impinj R2000-based) | 0.1 m |
Construction & locking
| Head material | ABS plastic |
|---|---|
| Head dimensions | 36 × 23 × 11 mm (one datasheet lists 36 × 26 × 11 mm; confirm on sample) |
| Wire | Steel, 280 mm (11 in) long, 1.8 mm diameter |
| Locking | Steel-ball one-time lock; wire cannot be withdrawn once tightened |
| Removal | Cut the wire (single use) |
| Security classification | No ISO 17712 rating stated |
Seal, tie and plant tag comparison
| SKU | Type | Size | Chip | 4 W fixed reader | Handheld reader |
|---|---|---|---|---|---|
| ST-110 | One-time steel-wire cable seal | Head 100 × 26.5 × 13.4 mm; wire 280 mm × Ø1.8 mm | Alien Higgs-9 | 5 m | 2 m |
| ST-120 | Compact one-time steel-wire cable seal | Head 36 × 23 × 11 mm; wire 280 mm × Ø1.8 mm | Alien Higgs-9 | 0.3 m | 0.1 m |
| ST-130 | Plant breeding stake label | Head 100 × 60 × 3 mm; 360 mm overall | Impinj Monza 4QT | 10 m | 2.5 m |
| ST-140 | Cable tie tag | Head 53.5 × 30 × 1.9 mm; 330 mm overall | Impinj Monza 4QT | 0.7 m | 0.2 m |
| ST-150 | Archive file lock tag | Tag 44 × 32 × 3 mm; 83.31 mm overall | Impinj Monza 4QT | 1.5 m | 0.5 m |
| ST-160 | Leaf-shaped plant tag | Inlay pocket 52 × 20 × 2 mm | Impinj Monza 4QT | 7–8 m | 1.5–2 m |
All six tags operate across 860–960 MHz. Ranges as published with a 4 W fixed reader and an Impinj R2000-based handheld.
Specifications can change between production batches. Confirm the current revision with us before placing volume orders.
Ordering options
Quote the SKU that matches your frequency, interface and mounting. Not sure? Send us your controller model and we will pick the variant for you.
| SKU | Configuration | Actions |
|---|---|---|
| ST-120-GL | Compact UHF RFID cable seal, 36 × 23 × 11 mm ABS head, 280 mm × Ø1.8 mm steel wire, Alien Higgs-9, 860–960 MHz |
Where the ST-120 is used
- Utility meter boxes and metering cabinets resealed after inspection
- Valve handles and instrument covers on tankers and process lines
- Cargo compartment latches verified one seal at a time with a handheld
- Cash or valuables bags checked at a counter with a desktop reader
RFID Seals for Containers, Trucks & Meters
Plan RFID container seal checks: one-time-lock UHF wire seals, handheld and fixed gate readers, and encoding that links each seal to its shipment record.
ST-120 FAQ
Why is the read range so short?
The small head leaves little room for an antenna, so it is rated 0.3 m with a 4 W fixed reader and 0.1 m with a handheld. That suits deliberate, one-at-a-time verification rather than portal reading.
How does it differ from the ST-110?
Both use a 280 mm × 1.8 mm steel wire and a one-time steel-ball lock. The ST-120 has a much smaller 36 × 23 × 11 mm head and reads at 0.3 m, while the ST-110's 100 mm head reads at 5 m.
Can the seal be reused?
No. Once tightened, the wire cannot be withdrawn, so removal means cutting it and fitting a new seal.
Does it work with US and EU readers?
Yes. The tag covers 860–960 MHz, which includes both the 902–928 MHz and 865–868 MHz bands.
Before you buy
Related buyer guides
UHF RFID Frequency by Country: 902–928 MHz vs 865–868 MHz and Other Bands
Compare UHF RFID reader bands by country, including US, EU, UK, China, India and Japan. Understand ERP, EIRP, channel conditions and radio approvals.
How to Wire a Long-Range UHF Reader to an Access Controller or Barrier
Wire a UHF reader's D0, D1 and ground to your controller, match 26/34-bit Wiegand, size 12 V power and trigger the barrier by relay. Diagrams included.
Does RFID Work on Metal? How to Choose On-Metal Tags
Yes, RFID works on metal with tags built for it. See why metal detunes standard tags, compare ABS, PCB, ceramic and label tags, and test read range properly.
Related products
ST-110
UHF RFID Cable Seal, One-Time Steel-Wire Lock, 5 m Read
Single-use UHF RFID cable seal with a steel-ball lock and a 280 mm × 1.8 mm steel wire; reads at 5 m on a fixed reader for containers, tankers and trailer doors.
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Details →
ST-140
UHF RFID Cable Tie Tag, 330 mm, for Traceability
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ST-150
UHF RFID File Lock Tag for Archive & Folder Tracking
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ST-130
UHF RFID Plant Breeding Label, 100 × 60 mm, 10 m Read
PP plant label with a 100 × 60 × 3 mm head and 360 mm overall length, reading to 10 m on a fixed UHF reader, for breeding trials, nurseries and tree farms.
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ST-160
UHF RFID Leaf-Shaped Plant Tag, 7–8 m Read Range
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860–960 MHzImpinj Monza 4QT (EPC Gen2)7–8 m (4 W fixed reader)
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OM-170
13 m Long-Range ABS On-Metal UHF RFID Tag, 69 × 23 mm
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OM-110
Printable On-Metal UHF RFID Label, 65 × 35 mm
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OM-190
10 m PCB On-Metal UHF RFID Tag, 90 × 20 mm
Longest-reading PCB tag in our range: 10 m on metal with a 4 W fixed reader and 6 m with a handheld, in a 90 × 20 × 3.5 mm FR4 body. NXP UCODE 8.
902–928 MHz / 866–868 MHzNXP UCODE 810 m
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Get pricing for the ST-120
Send your card type, interface and quantity. You get a quote, lead time and compatibility notes within 24 hours — samples available for most items.