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SynTek iButton Tags and Dallas Keys Manufacturer

Buy RW1990, TM1990A-F5 and DS1990A-F5 touch memory keys straight from the factory that makes them: 304 stainless steel, Ø16.25 × 5.89mm, your logo lasered on button or handle, from 100 pieces.

 

An iButton is a 64-bit ID sealed inside a stainless steel can that hands its code to a probe reader the moment the two touch. No radio, no read range, no battery. SynTek has been building this category since 2006, and what you will find below is the full working set: RW1990 rewritable keys for intercom and duplication work, TM1990A-F5 and DS1990A-F5 read-only keys where the ID has to stay permanent, magnetic versions for vehicles, wristband formats for patrol staff, and the DS9092+ and copper probes that read them.

 

Most buyers arrive here for one of three jobs: fitting out building access control, issuing driver identification for GPS fleet units, or restocking guard tour patrol systems. If that is your project, the section below narrows the choice to a single chip in about thirty seconds.

SynTek iButton tags and Dallas keys in stainless steel with coloured ABS handles

Since 2006

iButton production

100 pcs

MOQ on stock colours

15–20 days

OEM lead time

CE / ISO 9001

certified production

 

SynTek iButton Tag Range for Access Control, Fleet ID and Guard Tour

First 123 Last

Magnetic TM1990-F5, magnetic DS1990-F5, magnetic RW1990, RW1990 and TM1990-F5 wristbands, RW2004 and TM01A run on the same lines. Browse them under TM1990A-F5 iButton and RW1990 iButton.

 

How to Choose Between RW1990, TM1990A-F5 and DS1990A-F5 Touch Memory Keys

 

All three run the same 1-Wire protocol, sit in the same F5 can, and read on the same hardware. The only real decision is whether the 64-bit ID needs to stay writable after it leaves our line.

 

Model Read / write Protocol Typical use Clonable
RW1990 Read and write, programmable in the field 1-Wire, DS1990A compatible Intercom key replacement, key duplication, tenants who change every few months Yes
TM1990A-F5 Read only 1-Wire Time attendance, guard tour, driver ID No, laser etched in production
DS1990A-F5 Read only 1-Wire Corporate access control, asset tagging No, laser etched in production
RW2000 / RW2004 Read and write 1-Wire Terminals that need rewritable blank stock Yes

Order RW1990 when credentials keep changing hands

 

An RW1990 blank takes a new ID from any standard TM programmer, so the same key goes back into service for the next tenant, driver or contractor instead of being thrown away. Locksmiths and intercom service companies stock it for the same reason: one blank covers whatever DS1990A or TM1990A original walks through the door. This is why RW1990 iButton cards make up the largest share of our repeat wholesale volume.

 

Order TM1990A-F5 or DS1990A-F5 when the ID has to be permanent

 

Both are laser etched during production and cannot be overwritten, which is exactly what an attendance record or a guard tour checkpoint needs. A credential that can be quietly duplicated destroys the audit trail. Physically they drop into the same reader as RW1990, so you can mix both types across one site without touching the hardware.

RW1990, TM1990A-F5 and DS1990A-F5 iButton chip options in one SynTek Dallas key product line

Specifications shared across the range

 

Button dimensions Ø16.25mm × 5.89mm, F5 package
Handle dimensions 40mm × 15mm ABS, button included
Button material 304 stainless steel, polished
Memory 64-bit unique ROM code, laser etched
Data transfer speed 16.3 kbps, standard mode
Read time Under 5 ms on momentary contact
Supply voltage 2.8V to 6.0V, parasitic power, no battery
Operating temperature -40°C to +85°C
Data retention Over 10 years
Stock colours Blue, black, red, green, yellow
Default engraving "SOA" or "TMC", or your own artwork

Not sure which chip your controller expects? Send us the terminal brand and model. We will confirm the chip and family code before you commit to a purchase order, and include a matching probe quote if you need the reading side too.

Ask SynTek to check compatibility

Why Sourcing Managers Keep Reordering SynTek Dallas Keys

Contact reading is the reason these keys outlive proximity cards on industrial sites. The ID only travels when the steel can physically meets the probe, so there is nothing to interfere with, no range to tune, and no false reads in a noisy plant room. You trade a touch gesture for a credential rated from -40°C to +85°C that carries no battery and holds its code past ten years.

 

The steel is the whole enclosure, not a shell wrapped around a laminate. That is why a Dallas key survives being dropped, stepped on, washed down or carried on a keyring for a decade, while a PVC card on the same construction or dairy site is unreadable inside a season. If you are currently replacing cards every few months, the arithmetic usually favours switching before the second reorder.

 

A practical note on cost: because the housing and handle are identical across the three chips, you can standardise on one look for the whole site and vary only the chip. Staff get read-only keys, maintenance contractors get rewritable ones, and nobody has to stock two different fob shapes.

 

SynTek Dallas key construction showing 304 stainless steel can and moulded ABS handle

Reader and Controller Compatibility Before You Place a Bulk Order

 

Every key on this page speaks standard 1-Wire, so it works with Dallas/Maxim probes, Teltonika GPS driver ID readers, guard tour patrol devices and the iButton capable access terminals common across Eastern Europe and the CIS. That covers most installed bases, but "most" is not good enough when you are buying five thousand pieces.

 

So we do the check for you. Send the controller model with your enquiry and we will confirm chip type and family code first. If your system reads a family code we do not stock, you will hear that before the purchase order, not after the container lands. We also supply the reading side, DS9092+ LED probes, copper probes, magnetic probes for vehicle mounting, USB adapters and the TM copier, so keys and hardware can travel on one invoice.

 

The application of ibutton tag

Custom OEM iButton Tags and Private Label Programs From Our Factory

Customisation happens at assembly, not by relabelling finished stock, which is why colour, engraving and pre-programmed IDs can all sit on the same order without stacking up surcharges.

 

Your logo on the button, the handle, or both

Stock keys carry "SOA" or "TMC" as the default marking. We replace it with your logo or text, lasered onto the stainless button, moulded handle, or both surfaces. Handle colours outside the five stock options are matched to your reference sample. Polybag, blister and carton printing can be private labelled in the same run, which matters if you are reselling under your own brand and would rather your customer never sees ours.

 

Minimum order, samples and how long it takes

Stock colours start at 100 pieces. Custom branded orders start at 500 pieces and run 15 to 20 days once artwork and the sample are approved. Before any of that, ask for 5 to 10 evaluation pieces so your engineer can bench test against the actual controller. We would rather send free samples now than argue about compatibility after production.

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Pre-programmed UID sequences

If your access platform needs a defined ID range, we write the UID sequence before shipment so the keys arrive ready to import into your database and nobody spends a week enrolling credentials by hand. Send the format and range with your purchase order. For RW1990 we can also ship blank if your team prefers writing IDs locally.

 

Who you are actually buying from

SynTek manufactures rather than trades. Our group runs a 5,000 m² production base with dust free workshops, five assembly lines and over 200 production staff, turning out more than 2,000,000 units a month across the iButton and keyfob categories for 340 plus B2B accounts. That shows up in your quotation: pricing, tooling changes and rework are settled in-house, not passed down to a third party factory with its own margin and its own schedule. It also means you can visit, or take the online factory tour, before you place a first order.

Ready to price a run? Send chip type, quantity, handle colour and whether you need engraving. You will get a quotation with unit price, lead time and sample plan, not a request for more information.

Request a quotation

Certification and Batch Testing on Every SynTek iButton Tag Order

CE Certification of Syntek
ISO9001

Testing is per batch, not per sample. Every key is read tested for a valid 64-bit code before packing, and engraving and colour are checked against the approved sample. If a shipment does not match that sample, tell us inside your inspection window and we settle it in writing, replacement or credit, before you place the next order.

 

iButton Tag Sourcing Questions From B2B Buyers

What is the difference between RW1990 and DS1990A-F5?

RW1990 is rewritable, so its 64-bit ID can be programmed or cloned in the field with a TM programmer. That makes it the standard choice for replacing lost intercom keys. DS1990A-F5 is read only, with a factory laser etched serial that cannot be changed. Both run 1-Wire and are interchangeable on the same reader.

What is the minimum order quantity?

100 pieces for stock items in standard colours, and 500 pieces for OEM orders with logo engraving, custom handle colours or pre-programmed UID sequences. Evaluation samples of 5 to 10 pieces are available before any bulk order.

How long does production take?

Custom branded orders run 15 to 20 days after artwork and sample approval. Repeat orders in stock colours ship faster because there is no engraving setup. Confirm the current schedule with your sales contact when you issue the purchase order, since lead time moves with volume.

Will these work with my existing 1-Wire readers?

In almost all cases, yes. RW1990, TM1990A-F5 and DS1990A-F5 follow the standard 1-Wire protocol and work with Dallas/Maxim probes, Teltonika GPS driver ID units, guard tour devices and most iButton access terminals. Send us the controller model and we will confirm the family code before you order.

What is the reading distance?

There is none, and that is deliberate. The stainless button has to touch the probe, which removes wireless interference and eliminates false reads. It is the reason these keys stay in service on industrial and vehicle installations where proximity cards misread.

Can RW1990 copy a DS1990A-F5 or TM1990A-F5 key?

Yes. An RW1990 blank can be written with the 64-bit ID read from a DS1990A-F5 or TM1990A-F5 original, using an iButton programmer or the TM copier we supply. This is the normal way to produce backup keys or replace a lost original without re-enrolling the whole system.

Do you supply readers as well as keys?

Yes. The category includes DS9092+ LED probes in zinc alloy, copper probes at 25mm diameter with 20cm cable, magnetic probes for GPS installations, and the TM card copier, so keys and reading hardware ship on one order.

Can I get samples before committing to a bulk order?

Yes, 5 to 10 pieces for evaluation. Tell us the chip and colour you want to test and, if relevant, the controller you will test against. We would rather your engineer confirms the read on your own bench than have you find out at container scale.

Talk to the people who make them. Include chip type, quantity, handle colour, engraving artwork and your reader model, and you will get a unit price, a lead time and a sample plan in the first reply.

Send your enquiry

We're professional ibutton tag manufacturers and suppliers in China, specialized in providing high quality customized products with low price. If you're going to buy bulk cheap ibutton tag, welcome to get free sample from our factory.

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