What’s difference between mi fare 1k and 4K ? Can i use it to read & write as 1k card ?

the difference is memory. if you use mifare 1k cards,you can buy our MIFARE 1K Cards,it's cheaper. but please note the UID can't change.

Can these be written to as nfc cards?

sorry,no. if you want to compatible with all nfc phone,please choose our ntag215 cards: https://www.amazon.com/dp/B07LFDQBFC

can it be read by NFC smartphone?

can read by some phone.but can't support all phone.

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4K RFID S70 Smart Card Chip 13.56MHZ IC Hotel Key Card (Pack of 10)

4K RFID S70 Smart Card Chip 13.56MHZ IC Hotel Key Card (Pack of 10)

Product ID: 39603375

Details

Brand
YARONGTECH
Cellular Technology
GSM
Product Dimensions
3.37"L x
Service Provider
KABA SAFLOK
Unit Count
10 Count

🆔Unique, non-rewritable 4-byte UID

💾4K bytes read/write memory

📡13.56MHz wireless frequency

€ 27.79

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

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Description

🔐 Unlock the future of smart security with every swipe!

ROBUST MEMORY CAPACITY - 4K bytes of secure read/write memory for versatile data storage
PLUG PLAY CONVENIENCE - Individually OPP bag packed for easy distribution and professional use
SEAMLESS ACCESS CONTROL - Operate effortlessly with ISO14443A standard RFID tech
UNIQUE IDENTITY GUARANTEED - Each card features a factory-locked, non-changeable UID for maximum security
SLEEK CUSTOMIZABLE DESIGN - Credit card-sized, blank white PVC cards ready for sublimation printing

This pack of 10 MIFARE Classic 4K RFID smart cards operates at 13.56MHz frequency, compliant with ISO14443A standards. Each credit card-sized PVC card features 4K bytes of read/write memory and a unique, factory-set 4-byte UID that cannot be altered, ensuring secure and reliable access control. Perfect for hotel key systems and professional security applications, these blank white cards are sublimation-printable and individually packaged for convenience.

Specifications

ASIN	B01LYBKM0U
Best Sellers Rank	#172,086 in Office Products ( See Top 100 in Office Products ) #385 in Identification Badges #852 in Home Security Systems
Brand	YARONGTECH
Built-In Media	Bag
Cellular Technology	GSM
Customer Reviews	3.9 3.9 out of 5 stars (51)
Global Trade Identification Number	00725350790301
Item Dimensions L x W	3.37"L x 2.13"W
Manufacturer	YARONG
Mfr Part Number	MIFARE Classic® 4K wristbands
Model Number	MIFARE Classic® 4K wristbands
Number of Items	10
Service Provider	KABA, SAFLOK, MIWA, ONITY
UPC	725350790301 725350789701
Unit Count	10 Count

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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