Anti-metal RFID Tags OPP7020 – Specifically Designed for Pallet Control System in Supply Chain

Anti-metal RFID Tags
Anti-metal RFID Tags

In recent years, anti-metal RFID tags have played a central role in objects identification and tracking applications as supply chain continues to expand the scale and RFID develops rapidly.

For the sake of meeting the increasing market demand, OPP IOT, a leading company who is dedicated to producing RFID tech products, has newly released a sort of anti-metal RFID tags using different materials, including ABS,FR4,PPFE and other special magnetic materials.

Taking UHF metal tag OPP7020 for instance, this passive anti-metal RFID tag is made from FR4 material with the superior performance on a variety of surfaces particular on metal or liquid, which makes it very suitable for goods tracking in logistics industry.

Working on 860MHz~960MHz global frequency and with EPC Gen2 chip, OPP7020 RFID anti-metal tag promises fast reading rate and long reading distance from 6.3 meter to 10.3 meters, allows 100,000 times reading and writing, and also supports excellent performance on any metal surface.

OPP7020 can be adhesive or easily fixed on any metal surfaces, such as on metal pallets, engine parts, metal containers and so forth. In virtue of the above advantages and combined with the features in practical application, the newly released anti-metal RFID tag series from OPP IOT can be diffusely and successfully used for asset management, pallet tracking, container identification and supply chain fields.

UHF RFID on Metal Tag OPP4215 Offers Long Read Range for metal environment


Since Ordinary RFID UHF tags are often not suitable for using on metal due to its short read range nowadays,OPP IOT has newly released UHF RFID On Metal Tag with long read range up to 7 meters to solve the problem of tracking environment around mental. With widely using in the logistics, the tags help to ensure the time of tracking the goods and enhance the security.

Compatible with international standard ISO18000-6B or ISO18000-6C (EPC C1 Gen2) protocols, the UHF RFID on- metal Tag can offer excellent communication with UHF Reader. And with its self-adhesive 3M Glue or screw holes on two sides, it can be directly attached to metal or containers of liquid. As a result of its special housing material and design, the data maintenance could last as long as 50 years.

As to operating frequency, this mount on metal RFID tag can be customized to cater for the actual standards in different countries, for example, 902-928MHz in USA, 868MHz in Europe and 950MHz in Japan. Besides, this tag can perform very well even in hostile conditions, including resisting against high temperature up to 150° C, as well as aggressive chemicals, like in the water and acid. Thus, the more hostile environment, the more can understand passive UHF on-metal RFID tag always reliable.

With the advantages mentioned above, these Gen2 RFID tag for metal have been successful applying in tracking under metal environments, such as blade servers, network equipment or mobile IT assets such as laptops and other handheld units.

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Asset tracking refers to the method of tracking your physical assets by scanning an RFID, GPS or UHF tag which identifies their location.

For example, there are multiple ways to track your assets in a warehouse environment. To track individual items, high frequency tags (13.56mHz) are most commonly used to book goods in and out of a warehouse, in a similar way to how a barcode would be scanned. However, for a large number of items, UHF (Ultra high Frequency) tags can be used; readers are positioned in and around the warehouse to pick up the information from items going in and out, in turn providing you with a live stock take.

During the manufacturing process of a product, you have the opportunity to tag different components and are given the ability to see the status of each component throughout the course of the production phase, allowing you to monitor each step. At the end of the production cycle, the tags allow you to receive a full audit trial of who did what and when; this allows you to observe the time spent during each step of the manufacturing process.

Asset tracking is not limited to manufacturing; it can be used in retail stores, educational environments and healthcare organizations, as a few examples.

Why Anti-Metal RFID Tags?

Before you understand the problem, you need to understand how RFID tags work — When an RFID reader scans a tag, it sends a radio-frequency electromagnetic field that powers the tag (passive tags) and allows the RFID reader to communicate with the tag. The problem arises when the RFID tag is fixed to a conductive surface, such a s metal. The conductive surface alters the electromagnetic field created by the RFID reader so that the RFID tag isn’t able to use the electromagnetic field to communicate with the reader.

Anti-metal RFID tags Solution above problem
Anti-metal RFID tags are embedded with a sheet of ferrite that is placed between the RFID tag and the adhesive backing of the tag. The ferrite works to reduce the amount of interference caused by the metal (or other conductive) surface. Ferrite is an iron-containing, ceramic-like material with unique magnetic properties that result in a high magnetic permeability and high electrical resistance.

How to Improve RFID Reader Ranges?

Your RFID reader is connected to your antennas, you’ve adjusted your power settings, and you’ve applied your RFID tags to the items you want to track;
however you’re having trouble reading your tags. Well, you’re in luck because this post will help you troubleshoot some of the common RFID read range
pitfalls. Before delving into the topic, the importance of testing cannot be stressed enough. Regardless of what is stated here, you should always
thoroughly test, make any necessary adjustments, and then retest.

Some hardware is designed for maximizing read range, while other hardware is designed to limit read range. It is important that you have the appropriate
hardware in place for your application. The following six tips walk you through key hardware specifications that will assist you in determining your
optimum setup.

Antenna Gain:
If you need more read range, use higher gain antennas. If you need less read range, use lower gain antennas. If you need to read tags up close, use very
low gain proximity antennas.

Antenna Polarization:
If tags are aligned with the antenna’s polarization, linear polarized antennas will read farther than circular polarized antennas. If tags are not
aligned with the antenna’s polarization, then circular polarized antennas will read farther than linear polarized antennas.


As a general rule of thumb, small tags will have shorter read ranges, and large tags will have longer read ranges. In order to get the best range from
any RFID tag, make sure that the tag is fully facing the antenna and pay particular attention to tag orientation when using linearly polarized antennas.
Lastly, when tagging objects with high liquid or high metallic content, be sure to choose RFID tags designed for mounting on such objects.

Reader Settings:
Higher power settings will result in greater read range, while lower power settings will result in decreased read range. Also, in order to maximize read
range, ensure that your reader is set to its highest receive sensitivity.

Cable Length, Multiplexers, and Adapters:
The longer the cable, the higher the loss and using adapters and/or multiplexers inserts additional loss into your RFID system. For maximum read range,
connect the antenna to the reader with the shortest cables you can get away with and don’t use unnecessary adapters or multiplexers. If you must use
longer cables, be sure to offset the loss with a higher rated insulated cable.

Environmental Factors:
MANY environmental factors can affect read range. When attempting to maximize read range, be sure to account for various types of interference and test,test, test!

Why using RFID in library?

Well according to the findings of surveys that I used to carry out annually almost 100% of them are using it to allow you to borrow items from the library without the need to trouble a member of staff. Libraries call this “self-service circulation” and it’s a bit like using the self-service device to buy goods in a supermarket except that you don’t have to pay and you use a radio scanner to read a library RFID tag instead of an optical scanner to read a supermarket barcode.

Like supermarkets libraries still do use barcodes to manage their stock sometimes although the information in the barcode is also present on the tag – plus a whole lot more. The main reason libraries switched from barcodes to tags was to improve security. Before RFID libraries tried a variety of ways to protect themselves from theft – the most popular was something called ‘tattle-tape’ – a magnetic strip hidden in a stock item that could be magnetised and de-magnetised. Security gates at library exits used magnetic waves to detect any item being removed illegally. The system worked well but required expensive and bulky electromagnets to arm and disarm the strips. RFID simply writes a code to each tag to specify whether it can be borrowed or not.

RFID security devices often resemble the earlier electromagnetic ones but work in a completely different way so you cannot ‘mix and match’ the two technologies.

HF or UHF – Which RFID Frequency to Use?

From those who are new to the world of RFID and rugged handheld computing, one of the most common questions I hear is “Which RFID frequency should I use: HF or UHF?” In this post, I’d like to help make this decision process a little bit easier. There are lots of different applications that use both HF (high frequency) and UHF (ultra-high frequency) RFID. And, like most options we have to choose between, each frequency has different pros and cons, so it really depends on what’s important for your specific application.

Below, I’ve provided a kind of assessment that will hopefully help you decide which RFID frequency is most beneficial to your organization. Asking yourself these questions will help give you a better idea of which direction you might want to take. If you are trying to choose between HF and UHF, I would definitely recommend doing some extra research on this topic, but this is a great starting point that will help you quickly understand some of the differences between HF and UHF RFID technology. So here you go.

1) Do you need the ability to read and write data over a distance greater than ~50 cm?

Yes → UHF might be a better option, allowing you to transfer data over several meters, while HF can only transfer data up to about 50 cm.
No → HF might be better for you because its range is shorter, making it more reliable.

2) Will your RFID tags be placed near liquids, metals, carbon substances, or other dielectric and conducting objects?

Yes → HF would probably work better because it is less vulnerable to interferences from surroundings. However, there are some manufacturers that have designed UHF tags that will work in these environments as well.
No → HF and UHF would both work well.

3) Do you need to store more than ~110 bytes of data on your RFID tags?

Yes → HF would probably be better because these tags can store between 64 bytes and 8 kilobytes of data, while UHF tags can only store 24-110 bytes of data.
No → Both HF and UHF would work—at this point you’d probably want to choose the most cost-effective option.

4) Do you need to read more than 20 RFID tags at one time?

Yes → UHF might be better for you since it can read up to 200 tags at a time, whereas HF can only read up to 20 tags at a time.
No → Both HF and UHF would work. However, if you’re planning to narrow down on one tag at a time, HF would probably be better since UHF might pick up multiple readings.

5) Will your tags be located in an area with a high amount of Electromagnetic Interference (EMI)? EMI is emitted by motors, robots on assembly lines, conveyors with nylon belts, etc.

Yes → HF would probably be best because it is less susceptible to inaccuracies due to EMI.
No → HF and UHF would both work.

6) Does your application require faster data transfer?

Yes → UHF would probably be better because it transfers data faster than HF.
No → HF and UHF would both work.

7) Is power usage an important consideration for your application?

Yes → HF might be better because it uses less power than UHF.
No → HF and UHF would both work.

8) Are there inhibiting UHF restrictions in your geographic location that would interfere with your use of UHF RFID?

Yes → HF might be better because the same HF technology is accepted worldwide, whereas UHF restrictions vary according to region.

Improve vehicle management efficiency technology of Ultra high frequency rfid

At present, most of the car parking access management using high-frequency close-in ic card, when the vehicle access, vehicles must stop by the card reader close to the card reader, can be identified only after the passage.

UHF rfid technology using long-range microwave identification, and high-frequency rfid technology compared with reading distance, identification speed, can identify high-speed moving objects, and can simultaneously identify the advantages of multiple tags, microwave card sensing distance can be Up to 2-10 meters, can be effective card vehicles to achieve automatic identification without stopping, while recording and out of the relevant information.

Ultra-high frequency rfid technology remote sensing ic card installed in the cab of each vehicle inside, when the car passing the reader’s sensing area, the sensor ic card sent by the reader sends a response signal to send back to the signal Card reader. The card reader then passes the read signal to the parking controller, the parking controller receives the information, the automatic check for the effective card, the brakes automatically open, the digital video recorder to start recording, captured the car into the Photos, computer records car name and the driver’s name and access time information.

The use of ultra-high frequency rfid technology parking management system using long-range read and write cards, do not need to stop rolling window reader, in 2-10 m (adjustable) distance identification rfid card, automatic control release, simplifies the Vehicle access procedures to improve the efficiency of vehicle management, to provide a great convenience to the owner, but also improve the vehicle access to the parking lot when the security.

RFID Application in Warehouse and Distribution Management

Warehouse and distribution center operations are at the surge in radio frequency identification(RFID) technology.

RFID is proving to be a cost-effective resource for saving time, improving visibility and reducing labor requirements for a variety of shipping, receiving and inventory management operations .

Interest in using radio frequency identification (RFID) technology in warehouse and distribution operations is at an all-time high. Wireless identification and tracking with RFID represents a new way to conduct operations, which creates new benefits and challenges. Many hardware and software suppliers are just beginning to explore how RFID technology can tie into warehouse management systems (WMS) to produce a warehouse/DC of incredible efficiency.Several WMS providers now support RFID data entry in their software.

Retailers are experimenting with RFID technology in stocked store shelves to keep track of tagged inventory and notify either the back room or the supplier when stock is low. The application could be modified for use in warehouses and distribution centers for materials management and inventory.

OPP4215 High-temperature resistant RFID tags

OPP4215 High-temperature resistant RFID tags are designed for applications where need RFID tags to be able to withstand high temperature abuse, and mean while be able to provide a reliable read performance.

OPP4215OPP4215 Functional Specifications:
RFID Protocol:EPC Class1 Gen2, ISO18000-6C
Frequency:US 902-928MHz, EU 865-868MHz
IC type:Alien Higgs-4
Memory:EPC 96bits (Up to 480bits) , USER 512bits, TID64bits
Write Cycles:100,000times
Data Retention:Up to 50 Years
Applicable Surface:Metal Surfaces
Read Range(On Metal):
(Fix Reader:ThingMagic M6-E, 36dBm/4W) Up to 680cm – (US) 902-928MHz, on metal
Up to 700cm – (EU) 865-868MHz, on metal
Read Range(On Metal):
(Handheld Reader: OP9908,R2000,33dBm/2W)
Up to 530cm – (US) 902-928MHz, on metal
Up to 550cm – (EU) 865-868MHz, on metal
Warranty:1 Year

OPP4215 Physical Specification:
Size:42x15mm, (Hole: D4mmx2)
Thickness:2.1mm without IC bump, 2.8mm with IC bump
Mounting Methods:Adhesive, Screw

OPP4215 Enivironmenal Specification:
IP Rating:IP68
Storage Temperature:-55°C to +200°C (280°С for 50 minutes, 250°С for 150minutes)
Operation Temperature:-40°C to +150°C (working 10hours in 180