Need a smaller credential than a full-size RFID card?
Stock SKU. Custom tooling from 2,000 pcs.
Standard; rush possible on request.
Stock samples via DHL / FedEx.
Use this keyfob or transponder when the credential needs to stay on keys, in pockets, or with everyday access routines. Confirm reader compatibility, shell style, numbering, and branding before production planning starts.
What buyers usually confirm first
swipe →Spec Check
Surface material, enclosure, attachment method, and environmental limits usually matter more than a broad tag name alone.
| Product Name | Key Transponder (Wedge / Brick Tag) |
| Housing Material | Epoxy (high-temperature molded) |
| Dimensions | 12 x 6 x 2.2 mm, 8 x 5 x 3 mm, 11 x 3 x 2.2 mm, 8 x 4 x 3 mm, 11 x 5 x 3 mm |
| Operating Frequency | 125KHz, 134.2KHz (ISO 11784/11785), 13.56MHz (ISO/IEC 14443A) |
| Chip Options | LF: TK4100, EM4200, EM4305, T5577, Hitag1, Hitag2, Hitag S256; HF: FM11RF08, MIFARE Classic 1K/4K, Ultralight, DESFire EV1/EV2/EV3 (2K/4K/8K) |
| Read Range | 2-10 cm (reader dependent) |
| Operating Temperature | -40 deg C to +85 deg C |
| Storage Temperature | -40 deg C to +170 deg C |
| IP Rating | IP68 (IEC 60529) |
Shortlist Logic
These features help teams decide whether the tag suits the environment, installation method, and read expectations of the real workflow.
Use Cases
Use cases matter because the right tag depends on surface, environment, attachment, and read distance in the field.
car key authentication that reduced theft rates by 40%+ in mandatory-adoption markets
compact transponder fits in slim key housings for two-wheel vehicle anti-theft
core RFID component for building entry keychains compatible with HID, Keri, and Farpointe readers
operator authentication prevents unauthorized use and logs equipment access
transponder-based key authentication for high-security cabinet and vault access
identify authorized service personnel and log maintenance access events
Key Transponder vs Mini Bullet Tag — How To Choose
Both are the smallest RFID form factors in the catalog (7-18 mm). Key transponder uses biocompatible glass for implantation in living tissue or immersion in chemicals / fluids. Mini bullet uses ABS plastic for press-fit into drilled holes in dry industrial assets. Non-interchangeable — biocompatibility is the key decision axis.
Option A Glass capsule, biocompatible, fluid-safe
Best for
Option B ABS cylinder, press-fit drilled hole
Best for
Quick decision tip — If the tag goes inside a living organism (pet, livestock, medical implant) or is immersed in chemicals / fluids, glass transponder (Option A) is the only biocompatible + chemical-inert option. If the tag presses into a drilled hole in industrial dry materials (metal, wood, plastic), ABS bullet (Option B) at similar price is rugged for industrial wear. Wrong choice destroys functionality — never substitute glass for bullet or vice versa.
Supplier Fit
Once the format is right, most teams still need confidence in manufacturing control, sample support, and repeat-order reliability.
Quality-focused manufacturing and sample support for custom RFID projects.
RFID manufacturing experience across cards, tags, labels, wristbands and readers.
Test product compatibility before bulk purchasing and customization decisions.
Next Reading
These guides help buyers compare environments, tag formats, and mounting logic before they commit to the first sample plan.
Comparison Pages
These head-to-head pages help buyers compare chip, frequency, material or format decisions before they lock a sample plan for this product.
Commercial Fit
Most inquiry-ready visitors want to know whether this product matches their workflow, region and approval stage. These cues help them move faster without leaving the product page.
Often validating tag fit, reader behavior and installation method before including the product in a wider solution.
Usually focused on wash-cycle durability, attachment method and read consistency in bulk handling.
Typically comparing on-metal, pallet, tyre or rugged tags for repeat deployment in harsh environments.
Quote Checklist
Market Notes
Frequent projects include warehouse visibility, IT asset management, returnable packaging and on-metal identification.
Industrial laundry, reusable transport items and traceability projects often require careful sample validation and repeatability.
Outdoor assets, utilities and long-service industrial tagging often put more weight on enclosure durability and field conditions.
Nearby Options
A similar tag can behave very differently once surface, enclosure, and installation method change, so it helps to keep close options visible.
RFID Tags
Compare this option if enclosure, mounting, or environment fit may change the better tag choice.
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RFID Tags
Compare this option if enclosure, mounting, or environment fit may change the better tag choice.
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RFID Tags
Compare this option if enclosure, mounting, or environment fit may change the better tag choice.
Compare this option
RFID Tags
Compare this option if enclosure, mounting, or environment fit may change the better tag choice.
Compare this optionBefore You Order
Five short reads on the procurement-side topics every B2B RFID buyer wants answered before signing a quote — MOQ thresholds, lead time reality, pricing transparency, sample policy, and how to audit a Chinese factory before your first order.
Buyer Questions
These FAQs cover the points that usually come up between a first shortlist and a real sample or quote request.
For Key Transponder, the standard MOQ starts at 1,000 pieces on stock SKUs. Custom shape, material or antenna tooling typically requires 3,000–5,000 pieces to cover one-time mold / die-cut setup cost. Exact MOQ and unit pricing are quoted per project once chip, customization and packaging are confirmed.
Yes. Stock rfid tags samples of Key Transponder are typically free; we only ask buyers to cover DHL/FedEx express shipping. Samples ship in 1–3 business days after your order is confirmed and arrive in 2–5 days to most countries. Custom samples (new chip, new size, printed artwork) usually take 3–7 additional days.
Standard Key Transponder orders ship in 7–15 business days after PO confirmation and artwork approval. Large runs (>100k units) or orders with complex encoding / custom molds may take 15–25 business days. Rush production is available on request for time-sensitive launches; confirm MOQ and artwork early to protect the timeline.
Yes. Key Transponder supports end-to-end customization: full-color CMYK / silk-screen / UV printing, laser engraving, serial numbering, custom chip encoding (UID write, NDEF, sector locking), custom shape / size (subject to tooling MOQ), and packaging. Share your artwork, chip requirement and quantity and we will return a spec sheet + price within 24 hours.
Key Transponder supports LF: TK4100, EM4200, EM4305, T5577, Hitag1, Hitag2, Hitag S256; HF: FM11RF08, MIFARE Classic 1K/4K, Ultralight, DESFire EV1/EV2/EV3 (2K/4K/8K). Before ordering, share your reader model or current credential so we can confirm the exact chip variant (e.g., MIFARE Classic 1K vs DESFire EV3, NTAG213 vs 215) and avoid compatibility issues after lamination.
RFIDAK operates under ISO 9001:2015 (Quality Management) and ISO 14001 (Environmental Management), audited by SGS. Key Transponder is subject to incoming material inspection, in-process QC at every lamination / bonding / encoding step, and 100% electrical performance testing before shipment. Products meet CE, FCC, RoHS and REACH as applicable by market. Full test reports are available on request for buyer audits.
Yes. Key Transponder can ship with UID range assignment, NDEF URL encoding (for NFC), sector-locked user data, serial numbering, and CMYK / silk-screen / UV printing of your artwork. Provide an AI/PDF artwork file at 300 dpi with 3 mm bleed and a chip-encoding spec; we return a digital proof for approval before production.
RFIDAK ships Key Transponder via DHL / FedEx / UPS (door-to-door, 3–5 days to most countries), air cargo (5–7 days for heavier orders), or sea freight (20–35 days for bulk over 500 kg). Standard Incoterms are EXW, FOB Shenzhen and DDP; choose based on customs clearance preferences. Commercial invoice, packing list and CoC / MSDS are included automatically.
For repeat buyers, RFIDAK locks tooling, artwork and chip encoding on file so subsequent POs ship faster — typically 5–10 business days for stock chip types at previously-run quantities. Price is adjusted transparently per chip market rate and FX movement; we flag any chip shortage (e.g., DESFire EV3) before quotation so the project plan stays realistic.
Key Key Transponder specs: frequency 125 kHz, 134.2 kHz (ISO 11784/11785), 13.56 MHz (ISO/IEC 14443A); dimensions 12 x 6 x 2.2 mm, 8 x 5 x 3 mm, 11 x 3 x 2.2 mm, 8 x 4 x 3 mm, 11 x 5 x 3 mm; substrate Epoxy (high-temperature molded). A full technical datasheet including read range, chip memory map, IP / temperature rating and compliance certificates is available on request; attach your reader model and target environment so we can confirm suitability before quoting.
Try before you buy. Request free samples of any RFID product from our 50+ SKU catalog. Samples shipped via DHL/FedEx within 1-3 business days worldwide.
Not ready to chat? Just drop your email and we'll send the RFIDAK product catalog (PDF).
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