TK4100 (EM4100 compatible) Card Supplier
RFIDAK supplies TK4100 (EM4100 compatible) cards from our Shenzhen factory with 500 cards minimum order, 12-15 working days lead time, and full ISO/IEC 11784/11785 compliance — used for apartment / office access and gym lockers.
Quick spec — TK4100 (EM4100 compatible) Card
Chip technical brief
TK4100 is a 125 kHz read-only chip with a 64-bit factory-programmed UID. It is the entry-level choice for any LF access control deployment where the reader simply checks the UID against a whitelist — gym lockers, apartment parking, basic office doors, pet ID glass tags. Per-unit cost is the lowest in the entire RFID catalog. TK4100 is functionally identical to EM4100 and is the chip behind virtually all "white card 125 kHz blank" SKUs sold globally.
Buyer one-liner
Cheapest 125 kHz LF chip; UID-only, budget access control and pet identification.
Typical use cases
- ▸ Apartment / office access
- ▸ Gym lockers
- ▸ Parking
- ▸ Pet ID glass tags
- ▸ Budget time attendance
Compatible readers
- ▸ Any 125 kHz reader (HID 5365 ProxPro, Wiegand readers)
Card manufacturing
The CR-80 card body is the ISO 7810 ID-1 standard at 85.6 × 54 × 0.84 mm and is the dominant form factor for contactless smart credentials. RFIDAK produces cards in PVC (default), PETG (recyclable), ABS (high-temperature for hotel locks that overheat), wood/bamboo (premium hospitality finish), and coated paper (single-use ticketing). The chip + antenna inlay is sandwiched between two laminated layers; full-color CMYK or 4-color silkscreen printing is applied before lamination. Common finishes include matte, gloss, magnetic stripe (HiCo or LoCo), signature panel, embossed numbering, and laser-engraved UID for tamper-evident applications. Cards ship in 200-piece cartons; standard MOQ is 1,000 cards.
Typical sizes
- • CR-80 (85.6 × 54 × 0.84 mm)
- • CR-79 (84 × 53 mm)
- • Custom shape
Materials
- • PVC (default)
- • PETG (recyclable)
- • ABS (high-temp)
- • Wood / bamboo (premium)
- • Coated paper (single-use)
Compliance
- • ISO 7810 ID-1
- • CE (cards used in EU markets)
- • FCC Part 15 (chip-level)
Why source TK4100 (EM4100 compatible) cards from RFIDAK
TK4100 cards are the entry-level 125 kHz LF credential, used in budget access control deployments where a 64-bit factory-programmed UID is sufficient. RFIDAK ships TK4100 cards as the lowest-cost RFID credential in the catalog, suitable for apartment access, gym lockers, parking systems, time-attendance, and pet identification applications. Functionally identical to EM4100, the chip is the foundation of essentially all "white card 125 kHz blank" SKUs sold globally.
Buyer snapshot
Apartment building managers, gym franchise operators, parking-lot integrators, time-attendance vendors, and budget-conscious property managers.
Anonymized project examples
Example 1
A 12-building apartment complex in Mexico City issued 4,800 TK4100 cards to tenants. Cards work with installed Wiegand-protocol 125 kHz readers; reissue cost is $0.18/card.
Example 2
A 24-location gym franchise in Brazil reordered 18,000 TK4100 keyfobs annually for member churn replacement.
Compare with other cards
Other chips that work in card format. Use this as a quick selector before requesting samples — RFIDAK ships free 3-5 unit test packs across multiple chip options.
| Chip | Memory | Security | Typical Use | Cost Tier |
|---|---|---|---|---|
| TK4100 (EM4100 compatible) (this page) | 64 bits read-only UID | None (read-only UID) | Apartment / office access | $ |
| EM4200 | 128 bits read-only UID | None (read-only UID) | Large enterprise access (>1M credentials) | $ |
| MIFARE Classic 1K | 1,024 bytes EEPROM | Crypto-1 (deprecated since 2008 | Hotel key cards (Saflok / VingCard / Onity legacy) | $ |
| MIFARE Classic 4K | 4,096 bytes EEPROM | Crypto-1 (deprecated | Legacy multi-app cards | $$ |
| MIFARE Plus S 2K | 2,048 bytes EEPROM | AES-128 in Security Level 3 | Migration from MIFARE Classic 1K | $$$ |
Recommended RFIDAK SKUs
These products in our catalog ship with TK4100 (EM4100 compatible) as a chip option.
RFID Cards
RFID Card
An RFID smart card is a standard ISO 7810 CR-80 contactless credential (85.6 x 54 x 0.8-0.9 mm) used for access control, cashless payment, t…
RFID Keyfob
RFID Keyfob
An RFID keyfob is a compact keychain-mounted access credential housed in ABS, PPS, fiberglass, wood, or coconut shell, providing more durabl…
RFID Tags
RFID Glass Tag
An RFID glass tag is a passive transponder enclosed in a biocompatible glass capsule, designed for subcutaneous injection in animals via syr…
Frequently asked — TK4100 (EM4100 compatible) cards
What is the minimum order quantity for TK4100 (EM4100 compatible) cards? ▾
500 cards is the standard MOQ. Smaller pilot batches may be possible at +15-30% per unit. For 5,000+ orders, volume discounts of 5-10% typically apply; 50,000+ orders move to direct-import pricing tiers.
Which readers are tested compatible with RFIDAK TK4100 (EM4100 compatible) cards? ▾
Any 125 kHz reader (HID 5365 ProxPro, Wiegand readers). RFIDAK ships free 3-5 unit test packs to integrators evaluating reader compatibility before bulk commitment.
Can RFIDAK pre-encode TK4100 (EM4100 compatible) cards to our specification? ▾
Yes. For UID-only chips, customer-supplied EPC / NDEF / data-block content is written before shipment. Per-unit pre-encoding pricing is typically +$0.05-0.20 depending on complexity.
What lead time should I plan for TK4100 (EM4100 compatible) cards to major export markets? ▾
12-15 working days production from artwork approval, then 4-6 days DHL air or 18-30 days sea freight. Total door-to-door is typically 18-22 days air or 30-45 days sea.
Are RFIDAK TK4100 (EM4100 compatible) cards compliant with ISO 7810 ID-1? ▾
Yes. RFIDAK TK4100 (EM4100 compatible) cards carry ISO 7810 ID-1, CE (cards used in EU markets), FCC Part 15 (chip-level) compliance. Test reports are available on request under NDA.
Ready to source TK4100 (EM4100 compatible) cards?
Get pricing in 24 hours and free 3-5 unit samples to validate before bulk commitment. MOQ: 500 cards · Lead time: 12-15 working days.
Get a Quote — 24h ResponseGet Free RFID Samples
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).
We'll only use your email to send the catalog and reply to your inquiry.