125KHz LF Rewritable T5577 RFID Keyfob / EM4305 RFID Key Tag

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$0.10 - $0.60 / Piece | 1000 Piece/Pieces rfid key fob price is depend on your quantity (Min. Order)
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Quick Details
Place of Origin:
Guangdong, China
Brand Name:
TJ Keyfob
Model Number:
door keyfob
Access Control System
Size and shape:
Product name:
125Khz T5577 Waterproof Door Key Tags RFID Keyfob
reading distance:
origin country:
Company Type:
Sampls Availble
Supply Ability
Supply Ability:
40000000 Piece/Pieces per Day door keyfob sample offer
Packaging & Delivery
Packaging Details
200pcs/inner box 1000/2000/3000 carton
box box's standard (cm):23*20*17,48*23*13,48*23*17,48*23*25,
Lead Time :
5-7 days after the order was confirmed

125KHz LF Rewritable T5577 RFID Keyfob / EM4305 RFID Key Tag 



Product Description

1. What is keyfob?

A fob, commonly called a key fob, is a small security hardware device with built-in authentication used to control and secure access to network services and data. The key fob displays a randomly generated access code, which changes periodically, usually every 30 to 60 seconds. A user first authenticates themselves on the key fob with a personal identification number (PIN), followed by the current code displayed on the device.

2.Size Format  

    the fob is non-standard size,all the product can customized

    General size Format

3. 125Khz Keyfob Stracture


4 Waterproof

T5577 chip Feature

1.T5577 Chip card Parameters List

Itme125Khz T5577 Waterproof Door Key Tags RFID Keyfob
Chip TypeT5577
Size and shapeCustomized
reading distance1-100mm
  • contactless read/write data Transmlssion
    radio frwquency fRF from 100khz to 150khz
    e5550 e5551 T5557 binary compatible
    extended mode
    small size, configurable for ido/iec 11784/785 cpmpatibility
    75 pf on-chip resonant capacitor(mask option)
    7*32-bit eeprom data memory including 32-bit password
    separate 64-bit memory for traceability data
    32-bit configuration register in eeprom to setup
              -data rate
                  RF/2 to RF/128,binary selectable,or
                  Fixed e5550 data rates
           -Other Options
                  Password Mode
                  Max Block Feature
                  Inverse Data Output
                  Direct Access Mode
                  Sequence Termiantor(s)
                  Write Protection (Through Lock-bit per Block)
                  Fast Write Method(5 Kbps Versus 2 Kbps)
                 OTP Functionality
                 POR Delay up to 67 ms
Memory330 bit
Operating DistanceUp to 50mm (depending on antenna geometry)
Weight6 grams
ApplicationsHigh security access control systems, Time attendance systems, Prepayment application, Loyalty program, Mass transportation ticketing, Staff identification

Key fob is also a word used to describe a key chain and several other similar items and devices. The word fob is believed to have originated from watch fobs, which existed as early as 1888. The fob refers to an ornament attached to a pocket-watch chain. Key chains, car starters, garage door openers, and keyless entry devices on hotel room doors are also called fobs.

Packaging & Shipping

1.Card custom delivery within 7 to 9 working days.

2.To make sure cards can be delivered without any damage, TJ card uses top standard packaging. All Paper boxes and cartons are made of high-quality material.

3.Delivery Detail:By International express,by sea or by air.

> DHL/FedEx/UPS/TNT: 3-5 workdays (for small volume)

> Air Shipping: 5-7 workdays

> Sea Shipping: 20-28 days

Packaging Detail    100 / inner plastic bag            1000  / 2000 / 5000 /carton

Delivery Detail        5~7 days after the order is confirmed

we offer   DHL, UPS ,EMS, TNT , FedEx

Company Information

Shenzhen Tianjun Smart Card Co;Ltd was established in 2009.We are specialized in PVC Cards designing researching,manufacturingand producing pvc cards and smart cards. We had cooperated with some famous company,such as British Telecom Group;Disneyland; CK and other famous company with high quality, prompt lead time and best service

Our factory main Product is Various Card and RFID Tag, The Factory's area is more than 3000 squares and 100 Staff, We can manufacture 5000000pcs cards very day!

Our Services

1, Leading time: Sample printing cost 3-5 business days, mess production cost 7-8 business days;

2, Quality insurance: Our pvc/metal/paper cards are all brand new and high quality;

3, After sale service: If the cards came out somehow like words or images differ from the artwork we both confirmed with, we promise will reprint for you by free, 10% color difference is not count.


If your factory accept small / trial order?
Yes, we do, cause we are first hand card manufacturer, and we are flexible.

If the pictures on your website is all real?
Yes, our factory have tons of samples left, they are all real shooting pictures.

Sample printing is free?
No, it is not free, but it only cost 31usd, factory price.

Without artwork, can you help?
Yes, we can build one design for you under your guilde and adjust it until you satisfy.


How to pay?

We are accept all payment in alibaba,but differrent payment terms against countries

Contact US

What can made value,It is your time!!!

All this contact way can save your Time


Tel :+86 15019400091 (whatsApp)


Skype : Ker Fan(kertianjuncard.com)

Facebook main website : @Tianjuncard

 Linkedin : Ker Fan