Custom ABS RFID Key Fob for Access Control

Custom ABS RFID Key Fob for Access Control

 

The Custom ABS RFID Key Fob is a compact contactless credential designed for door access control, apartment entry, hotel locks, gym membership systems, attendance terminals, lockers, parking entry and other short-range identification projects. Compared with a standard RFID card, this key-shaped tag is easier to carry on a key ring and is better suited for daily high-frequency use by residents, employees, members and guests.

 

This model uses a durable ABS shell with a sealed chip and coil inside. It can be supplied with 125KHz LF, 13.56MHz HF or dual-frequency chip options according to your installed reader system. For buyers comparing different key tag shapes and materials, you can also browse our custom RFID key fob range for ABS, epoxy, leather, wooden and dual-frequency key tag options.

 

Quick Project Fit:

 

Project Type	Recommended Option	Why It Fits
Apartment door access	125KHz TK4100 / EM4100 or 13.56MHz IC chip	Matches common residential door readers and is easy to issue to many users
Hotel lock or locker system	13.56MHz MIFARE-compatible or project-specified chip	Suitable for IC card style systems that require sector data or system registration
Gym, club or swimming pool membership	125KHz, 13.56MHz or NTAG213	Supports fast member identification, numbering, logo printing and optional NFC interaction
Old access system upgrade	Dual-frequency 125KHz + 13.56MHz	Allows one key fob to work during a phased reader replacement project
NFC phone tap or URL writing	NTAG213 / NTAG215 / NTAG216	Supports NDEF data writing for URL, text or simple smartphone interaction

 

Why Choose This ABS RFID Key Fob?

1. Durable ABS shell: The chip and coil are sealed inside a strong ABS housing, making the key fob suitable for repeated daily use in access control and membership environments.
2. Compact and easy to carry: The small 37*31*5.5mm body can be attached to a key ring, lanyard or badge holder without taking much space.
3. Custom chip options: Available with common LF and HF chips for different door access readers, hotel locks, locker controllers and attendance terminals.
4. Branding and numbering support: Logo printing, UID printing, serial number, QR code, barcode and data encoding can be arranged for project orders.
5. Bulk order friendly: Standard packing, sample support and stable production make it suitable for system integrators, distributors and access control project contractors.

 

Product Parameters:

 

Product name	Custom ABS RFID Key Fob for Access Control
Size	37*31*5.5mm
Material	ABS shell with sealed chip coil
Standard chip	NTAG213 or customized chip according to project requirement
Optional frequency	125KHz LF / 13.56MHz HF / dual-frequency option
Protocol	ISO14443A for 13.56MHz HF version; other protocols depend on selected chip
Working life	100,000 times
Working temperature	-20℃~70℃
Weight	0.005KG
Reading distance	2~5cm, depending on reader power, antenna design and chip type
Memory	144 bytes for NTAG213; other memory capacity depends on selected chip
Color	Black, green, red, yellow, blue and customized colors
Surface craft	Silk screen printing, logo printing, UID printing, laser number, QR code, barcode
Data service	UID list, serial number, URL writing, NDEF writing or customer data encoding

 

Available Chip and Frequency Options:

 

Frequency Type	Common Chip Options	Typical Application
125KHz LF	TK4100, EM4100, EM4200, T5577	Basic door access control, apartment entry, attendance systems, old ID card systems
13.56MHz HF	NTAG213, MIFARE Classic 1K compatible chip, F08, Ultralight series	NFC applications, membership systems, smart locks, hotel access, IC card systems
Dual Frequency	125KHz + 13.56MHz combination	System migration, mixed reader environments, upgrade projects

 

How To Choose The Right Version?

 

For most basic door access systems, 125KHz TK4100 or EM4100 key fobs are used for simple ID reading. For NFC phone interaction, URL writing, or HF smart card systems, 13.56MHz NTAG213 or MIFARE-compatible chips are more suitable. For projects upgrading old readers step by step, a dual-frequency RFID key fob can support both legacy and new readers in one housing.

 

For an NFC-style key fob with smartphone interaction or URL writing, NTAG213 is a practical choice because it supports NFC Forum Type 2 Tag use and ISO/IEC 14443 Type A communication. For door access systems that use MIFARE Classic-compatible readers, you may also consider our 13.56MHz MIFARE 1K key fob option. If you are not sure whether your reader uses LF or HF technology, this RFID key fob frequency selection guide can help you check the right direction before ordering.

 

 

Application Scenarios:

 

This ABS RFID key tag is suitable for projects where users need a small, durable and easy-to-carry credential. It can be used for apartment access, office doors, school attendance, gym membership, swimming pool lockers, hotel room entry, club membership, parking entry, elevator control and equipment authorization.

 

For door access projects, the most important step is to match the chip and frequency with the installed reader. A 125KHz key fob cannot be read by a 13.56MHz-only reader, and a 13.56MHz ISO14443A key fob will not work with a pure LF ID reader. If you also need a matching reader, please check our RFID access control reader for door systems before confirming the order.

 

Custom Options for Project Orders:

 

SynTek can customize this RFID smart key according to your access control system and branding requirements. Available custom options include shell color, one-color or multi-color logo printing, UID number printing, laser marking, QR code, barcode, sequential number, key ring accessory, chip pre-encoding and customer database matching.

 

For system integrators and distributors, we can prepare UID lists or encoded data files before shipment, which helps reduce installation time on site. For property management, hotel and membership projects, we recommend confirming reader model, chip type, number format and printing layout before mass production.

 

If your project needs a more premium visual effect, epoxy surface or leather housing may be considered. If the key fob will be carried with metal keys every day, ABS is usually a practical and cost-efficient choice. For material comparison before placing a bulk order, you can read our ABS vs epoxy RFID keyfob material comparison.

 

Data Encoding and Number Matching:

 

An ABS RFID key fob can be customized with shell color, logo printing, UID or serial number printing, QR code, barcode, laser number, key ring accessory, and pre-encoded chip data. For project orders, buyers should confirm the reader model, chip type, numbering rule, artwork file, and data format before mass production.

 

For simple access control projects, many systems only read the chip UID. For membership or hotel projects, the system may require specific sector data, sequential numbers or user database matching. We can provide UID list files, printed serial numbers, URL writing, NDEF writing or customer data encoding according to the confirmed format.

 

Information To Send Before Quotation:

 

Information Needed	Example	Purpose
Reader model or system type	125KHz ID reader, 13.56MHz IC reader, hotel lock model	Helps confirm chip compatibility before production
Chip requirement	TK4100, EM4200, T5577, NTAG213, MIFARE-compatible chip	Avoids wrong frequency or wrong protocol selection
Printing file	AI, PDF, CDR or high-resolution logo file	Used for logo layout, serial number or QR code confirmation
Encoding format	UID list, decimal number, hexadecimal number, URL or NDEF data	Ensures the delivered key fobs can be registered smoothly
Quantity and delivery plan	Sample quantity, first batch quantity, annual demand	Helps arrange sample test, production schedule and packing

 

Buyer Confirmation Checklist:

 

What to Confirm	Why It Matters
Reader frequency	Determines whether you need 125KHz, 13.56MHz or dual-frequency key fobs
Chip model	Affects compatibility, memory, reading behavior and system registration
UID or writable data	Some systems only read UID, while others require encoded user data
Printing requirement	Logo, serial number, barcode or QR code should be confirmed before production
Order quantity	Helps arrange sample testing, production schedule and shipping method

 

Quality and Compatibility Notes:

 

Each batch can be tested for chip response, reading performance and appearance before shipment. Because RFID performance is affected by chip type, reader power, antenna design and installation environment, we recommend testing samples with your actual access control reader before placing a large order.

 

The normal reading distance of a compact ABS RFID key fob is usually a few centimeters in access control use. Actual performance depends on the selected chip, reader power, antenna design, installation environment, and nearby metal objects, so sample testing with the real reader is recommended before bulk order.

 

For technical reference, the NTAG213 chip family is described by NXP in its NXP NTAG213/215/216 technical information. For HF contactless card communication, buyers may also refer to the ISO/IEC 14443-3 contactless proximity standard and the NFC Forum Type 2 Tag Specification.

 

Package:

• 100pcs/bag
• 2000pcs/ctn
• Carton size:38*20*28cm
• GW:12KG

Custom packaging, label marking and carton information can be arranged for bulk RFID key fob orders. If the order requires UID list matching, printed serial numbers or project-specific encoding, please provide the data format before production.

 

 

Why Buy from SynTek?

 

SynTek supports RFID key fob customization from chip selection to final packaging. Whether you need a simple read-only ID key tag for an old door access system or a 13.56MHz NFC keychain for membership interaction, our team can help confirm the right chip, frequency and printing method before mass production.

 

For pricing, samples or project matching, please send your reader model, chip requirement, quantity, artwork file and encoding format through our request a custom RFID key fob quotation page.

 

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