-€10.00
Expert4House – Smart Home Automation
RFID 125 kHz PRO EM4100 TK4100 Card and Keyfob for Access Control
€0.99
Tax included
No review at the moment
- Thick card with slot: PVC clamshell RFID card, more rigid than a thin card, with a slot for a lanyard, clip or badge holder.
- Or a key fob: teardrop-shaped ABS tag with a key ring, with the chip and coil sealed inside; select your version from the available options.
- 125 kHz only: works with readers, keypads and locks that read at 125 kHz (EM/ID cards); does not work with 13.56 MHz Mifare readers.
- TK4100 chip: compatible with the EM4100 format, the most widely used format in 125 kHz access control systems.
- Fixed unique code: each card and key fob has a unique UID code, set at the factory and not changeable.
- Not rewritable: cannot be programmed or used to copy another badge: copying requires rewritable tags, which are a different product.
- Printed number: the badge number is printed on the card, making it easy to register in management software and identify without presenting it to a reader.
- Battery-free: the card and key fob are passive: they are activated by the reader's field when brought close to it and have no batteries to replace.
- Integrated antenna: the card contains a rectangular copper antenna laminated between the PVC layers; the key fob contains a circular coil.
- Typical uses: opening doors and gates, lockers, time and attendance tracking, parking facilities and alarm control panels with a 125 kHz reader.
- Registration: add the card or key fob through the reader's menu or the device's app by presenting it to the reader: the procedure depends on the model you use.
- Devices in our catalogue: Tuya keypads and access control devices with a 125 kHz EM reader; for models sold in two versions, choose the EM version, not Mifare.
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Thick RFID card or key fob at 125 kHz with TK4100 (EM4100) chip for access control readers, keypads, and locks
This 125 kHz RFID badge card is the electronic key for access controls that read EM cards: bring it close to the reader and the door, gate or locker opens. You can choose the thick card, clamshell type, in rigid PVC, with slot for lanyard or clip and the printed number, or the teardrop-shaped keyring in ABS to keep with your house keys. Both have the TK4100 chip, compatible with the EM4100 format, and a fixed unique code that the reader registers the first time. They have no battery and cannot be reprogrammed. They work only with 125 kHz readers: before purchasing, check that your device reads EM cards and not just 13.56 MHz Mifare cards.
Compatible with 125 kHz Readers, Keypads and Control Panels, not with Mifare Readers
The card and keychain work with any reader that reads 125 kHz EM cards: outdoor keypads, access controls with display, video door entry systems with badge reader, electric locks, and alarm control panels with RFID reader. Compatible options in our catalog include, for example, the Tuya access control with built-in keypad and other models in the smart access control category with a 125 kHz reader. Some devices are sold in two versions, one for EM cards and one for Mifare cards: for these badges, you need the EM version. The badge does not work with 13.56 MHz Mifare readers, which are a different system even though the card looks the same. Registration is done from the reader or the device's app, by holding the badge close: the number of storable badges depends on the reader.
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Thick Clamshell Card with Slot and Printed Number, Different from Thin Cards
The card is a clamshell type: two PVC shells with the rectangular copper antenna and the chip laminated inside. It is thicker and more rigid than a credit-card-sized card, bends less in a wallet, and has a slot for attaching it to a lanyard, a retractable reel, or a jacket clip. On one side the badge number is printed, which is used to register it in attendance management software or to identify who it was issued to. If you need a thin card to keep in your wallet or to customize with printing, check out the thin 125 kHz ID cards and tags; for those who don't want to carry anything in their pocket, there's the silicone RFID 125 kHz wristband.
ABS Keyring with Sealed Coil and Non-Modifiable Unique Code
The keychain has a teardrop-shaped ABS shell, with the copper coil and chip sealed inside: the supplier states it's water and impact resistant. It attaches to your keys with the included metal ring, so you always carry it with you and can tap it to the reader without digging through your wallet. Like the card, it has a unique UID code written at the factory and non-modifiable: it can't be erased, reprogrammed, or used to duplicate another badge. If you lose one, you remove it from the reader and register a new keychain: the other badges keep working.
Frequently Asked Questions
What is the difference between the card and the keychain?
None in operation: same TK4100 chip at 125 kHz and unique code. The shape changes: the thick card has the lanyard hole and the printed number, while the ABS keychain attaches to your keys.
Does it work with my player?
Yes, if the reader reads 125 kHz EM cards. Check the device specifications: if it only lists Mifare or 13.56 MHz, the badge won't be read.
Does it work with 13.56 MHz Mifare readers?
No. Mifare is a different system, at 13.56 MHz. For those readers you need Mifare badges.
What chip does it have?
The TK4100 chip, compatible with the EM4100 format.
Can it be rewritten or used to copy another badge?
No. The code is written at the factory and cannot be modified. To duplicate a badge, rewritable tags are needed, which are a different product.
How do you sign up on the reader?
From the reader's menu or the device's app, by holding the badge close when the reader is in registration mode. The exact procedure depends on the model.
What is the number printed on the card for?
It is used to register it in attendance management systems or to know who it was given to, without having to pass it over the reader.
Does it need a battery?
No. The card and keyfob are passive: they're activated by the reader's field when you bring them close.
What happens if I lose a badge?
You delete it from the reader or the app, so it no longer opens, and you register a new badge. The other badges remain valid.
Does it work with Tuya smart locks?
Only with those that have a 125 kHz EM card reader. Many smart locks only read Mifare 13.56 MHz cards: check the "Supported card types" feature of the lock.
Tuya-C-Card1-EM
Data sheet
- Material
- ABS
High-quality PVC plastic - Voice Control
- None
- Coding chip and resistor
- EM4100, TK4100
- Radio frequency
- 125KHz
- Supported Card Type
- 125KHz EM ID cards
- Ideal for Automation
- Accesses
Doors
Electric locks - Works with
- No app (accessory)
- Hub required
- None (standalone)
- Ideal for
- Locks & access control
- Home Assistant integration
- Not integrable
Specific References
- UPC
- 950322235221
- EAN13
- 9503222352212
- MPN
- Tuya C-Card 1 EM
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- Thick card with slot: PVC clamshell RFID card, more rigid than a thin card, with a slot for a lanyard, clip or badge holder.
- Or a key fob: teardrop-shaped ABS tag with a key ring, with the chip and coil sealed inside; select your version from the available options.
- 125 kHz only: works with readers, keypads and locks that read at 125 kHz (EM/ID cards); does not work with 13.56 MHz Mifare readers.
- TK4100 chip: compatible with the EM4100 format, the most widely used format in 125 kHz access control systems.
- Fixed unique code: each card and key fob has a unique UID code, set at the factory and not changeable.
- Not rewritable: cannot be programmed or used to copy another badge: copying requires rewritable tags, which are a different product.
- Printed number: the badge number is printed on the card, making it easy to register in management software and identify without presenting it to a reader.
- Battery-free: the card and key fob are passive: they are activated by the reader's field when brought close to it and have no batteries to replace.
- Integrated antenna: the card contains a rectangular copper antenna laminated between the PVC layers; the key fob contains a circular coil.
- Typical uses: opening doors and gates, lockers, time and attendance tracking, parking facilities and alarm control panels with a 125 kHz reader.
- Registration: add the card or key fob through the reader's menu or the device's app by presenting it to the reader: the procedure depends on the model you use.
- Devices in our catalogue: Tuya keypads and access control devices with a 125 kHz EM reader; for models sold in two versions, choose the EM version, not Mifare.
RFID 125 kHz PRO EM4100 TK4100 Card and Keyfob for Access Control
€0.99
Tax included
No review at the moment