EM4305 RFID Tag Rewritable Key Fob for Access Control
EM4305 RFID Tag – Rewritable RFID Key Fob for Access Control Systems
Secure your facility with our high-performance EM4305 RFID Tag, a rewritable and waterproof RFID key fob designed for reliable access control. Built on 125kHz low-frequency RFID technology, this compact fob supports both EM4305 and T5577 chips, making it ideal for modern, flexible security systems.
Whether used for staff management, apartment entry, gym access, or parking gate systems, the EM4305 RFID Tag delivers robust security with effortless integration.
Key Features of the EM4305 RFID Tag
Rewritable & Programmable
- Supports read/write capability for dynamic access control
- Ideal for frequently updated credentials like contractors or guests
Durable & Waterproof Design
- Built from impact-resistant plastic
- IP-grade waterproof rating for indoor/outdoor use
- Long-lasting shell ideal for daily handling
Reliable 125kHz Compatibility
- Fully compatible with EM4305, T5577, and most 125kHz systems
- Integrates with access control panels, attendance systems, and gated entry readers
Technical Specifications of EM4305 RFID Tag
| Specification | Detail |
| Frequency | 125kHz |
| Chip Type | EM4305 / T5577 |
| Read/Write | Yes (reprogrammable) |
| Material | ABS Plastic |
| Size | 35mm × 29mm × 5mm |
| Waterproof Rating | Yes |
| Weight | Approx. 5g |
| Compatibility | 125kHz readers (EM4305/T5577) |
| Operating Temp | -20°C to 60°C |
Common Applications
| Industry or Environment | Use Case |
| Office Buildings | Secure employee access and check-in |
| Gyms & Fitness Clubs | Member key fob for locker and door entry |
| Hotels & Apartments | Room access or guest badge control |
| Parking Facilities | Vehicle entry gate access |
| Educational Institutions | Faculty and student building access |
These applications are made possible by the core advantages of RFID technology. Learn more about the security and convenience benefits in our article, The Remarkable Benefits of RFID Cards.
Why Choose Our EM4305 RFID Key Fob?
- Fully rewritable and customizable access solution
- Compact, durable, and waterproof for daily use
- Works with most 125kHz proximity reader systems
- Bulk availability and custom printing options
- Ideal for corporate security, property management, and facility automation
Request a Quote or Sample Pack
Looking for reliable and programmable EM4305 RFID Tag?
We offer:
- Sample orders for testing
- Bulk pricing for businesses and integrators
- Technical support for system compatibility
- Custom facility code and card ID programming available
[Contact us now] to request a quote of EM4305 RFID Tag or discuss custom configurations.
Frequently Asked Question
The top questions about EM4305 RFID Tag.
The EM4305 RFID Tag is primarily used in access control systems for secure entry and identification. It’s commonly deployed in offices, gyms, residential buildings, hotels, and parking areas. Its rewritable memory makes it ideal for dynamic environments where user permissions may need regular updates.
Unlike standard read-only tags, the EM4305 Key Fob is rewritable, allowing administrators to update credentials or access permissions as needed. It’s also waterproof, durable, and compatible with many 125kHz RFID systems—including those that support T5577 chips.
If your system uses 125kHz low-frequency RFID readers, especially those compatible with EM4305 or T5577 protocols, this tag should integrate smoothly. It’s a good practice to confirm the system’s chip compatibility or request a sample for testing before ordering in bulk.
Yes. The EM4305 chip supports multiple read/write cycles—you can reprogram it up to 100,000 times, depending on your system and software tools. This makes it ideal for use cases involving rotating access, temporary visitors, or evolving employee access roles.
MOQ typically starts from 100 pieces, depending on the customization. Contact us for details or bulk pricing.
Hot To Customize RFID Tags
Know the customization process for RFID tags.
Size & Shape
Send your requirements on size and shapes. Tags are typically designed in simple shapes and sizes to match the internal antenna. However, they can also be customized in various sizes and shapes to best fit the intended application and the asset being tagged. For instance, RFID hang tags can be customized in size, shape, and attachment method to perfectly suit specific applications.
Layout & Chips
In the label format designer, select the layout that matches the type and size of the RFID label you wish to create. Our factory provides a variety of label templates, including RFID-specific options. We also offer a range of RFID chips tailored to meet your specific requirements.
High Customization
Custom tags are designed from the ground up to meet the needs of specific applications, with unique variables for nearly every option listed below. A semi-custom tag typically starts as a standard tag but offers additional customization options, such as custom printing, encoding, or specific backings and attachment methods.
Sample Confirmation
Before proceeding with full-scale production, we offer a sample confirmation process to ensure that the RFID tags meet your exact specifications and application requirements.
Mass Production
Our mass production process for RFID tags is designed to deliver high-quality, reliable products at scale, ensuring that your business has a steady and consistent supply of RFID solutions tailored to your needs. Leveraging state-of-the-art manufacturing facilities and advanced technology, we maintain efficiency and precision throughout the production cycle.
RFID Tags Application
Use customized RFID tags in different industries.
RFID Vehicle Tags
Vehicles with RFID tags enable secure access to gated areas. RFID tags also streamline truck weighing for efficient billing.
Temperature Sensor Tags
RFID temperature sensors, used in industries like steel, send data to alert users of unsafe conditions via RFID readers.
RFID Supply Chain Tags
RFID tags for supply chain visibility track products, showing when a box, pallet, or container moves from one facility to another.
RFID Personnel Tracking
RFID strengthens access security: employee badges for workspace entry, hotel wristbands for pool access.
RFID Pallet Tracking Tags
Our RFID tags are ideal for tracking pallets and containers, offering durable, low-profile solutions for warehouse management.
Custom RFID Tags & Labels
Our factory supplies custom RFID tags and OEM hardware solutions for unique needs when standard RFID products aren't available.
RFID Laundry Tags
Our RFID laundry tags, with a soft rubber casing, are flexible and durable, surviving 200 wash cycles and 60 bars of pressure.
Industrial RFID Tags
We provide rugged industrial RFID tags and readers for demanding applications. Our tags withstand all weather conditions.
Animal RFID Tags
RFID tags track animals and pets using ear tags or injectable ampoules. Ear tags can be custom-printed and come in various colors.
RFID Asset Tracking
RFID tags for asset tracking, like file servers, rental equipment, streamline inventory, asset management, enabling quick location, tracking.
Consumables RFID Tags
RFID counterfeit tags on consumables, with a reader in the machine, verify authenticity and prevent counterfeit use.
Manufacturing RFID Systems
RFID tags are used on almost all products—apparel, furniture, appliances, and cars—and are crucial for automated manufacturing systems.
Why Choose Us
As an original manufacturer with over 13 years of experience, we specialize in designing and manufacturing passive RFID (NFC, HF, and UHF) tags for inventory, laundry, access control, identification, and industrial automation management applications.
We are a pioneering leader in RFID technology and smart product solutions. For nearly 20 years, we have been at the forefront of custom RFID and NFC technology, offering innovative solutions in every imaginable form. Our expertise lies in developing and producing RFID/NFC products tailored to your requirements.
As the world’s leading RFID supplier, our factory is passionate about RFID technology. We deliver a wide range of products, including NFC tags, NFC cards, RFID/NFC labels, RFID inlays, various apparel tags, laundry tags, and RFID devices, to clients around the globe. Our RFID products are widely used in marketing campaigns, healthcare monitoring, workforce management, stock control, access control, apparel systems, laundry systems, inventory systems, IoT systems, and security applications.
Our Benefits
We provide competitive pricing and reliable quality products, backed by an after-sales warranty. Whether you are a distributor, system integrator, or end-user, you will find the right RFID and related products here, ensuring your company gains tangible benefits.
We have grown into a company with over 200 team members, including a production department, R&D center, sales department, technical support, and after-sales service. Understanding that time is of the essence, we can fulfill customized orders within just 5 days. Our dedicated team of over 100 factory staff ensures a stable supply and fast delivery for all our orders.
Related Products
Customize any RFID tags from our factory to meet your requirements.
