RW2004 Rewritable Blank
Rewritable blank with memory area for extended-format keys.
The blank with a memory area. For projects that need memory beyond the rewritable-ID role of an RW1990, the RW2004 (also known as TM2004) adds writable EEPROM on top, so it may stand in for the memory-carrying credentials that some controllers expect rather than just a serial number. It uses its own write routine — copier firmware calls it the TM2004 protocol, distinct from both RW1990.1 and RW1990.2 — so the duplicator must list it explicitly.
Ordering information
| MOQ | Confirmed by model and order when quoting |
|---|---|
| Preparation time | Availability and lead time are confirmed by model and order when quoting |
| Packing | Confirm pack quantity, protection and labelling for the selected model. |
| Samples | Sample quantity, fees and shipping are confirmed for the selected model. |
| Payment | Agree payment terms and the payee in the quotation and invoice. |
| Shipping | Confirm the shipping method, cost and timing for your destination and order. |
| Customization | State ROM, colour, marking and packing needs; feasibility and cost require confirmation. |
A rewritable blank with a usable memory block
Some controllers do not just read a key, they read what is written on it — a tenant record, a balance, a set of permissions. ID-only blanks cannot serve those systems; the RW2004 is a candidate, because it carries a writable memory block alongside the programmable ID. Treat the memory requirement as a separate selection criterion. For ID-only work, compare the proposed RW1990 or TM08v2 version with the actual equipment and validate a sample.
Key features
- Rewritable blank with an added writable memory area on top of the ID.
- Intended to stand in for memory-carrying keys such as the DS1996-class credentials some controllers expect; confirm acceptance by your controller on a sample.
- F5 can. Programming support depends on your equipment and firmware; test a sample on your own system before ordering.
Specifications
| Chip / compatibility | RW2004 / TM2004 · rewritable ID + EEPROM memory area |
|---|---|
| Memory | Writable 64-bit ID plus a user-writable memory block |
| Protocol | Write protocol "TM2004" — a third routine, separate from RW1990.1 and RW1990.2 |
| Package | F5 can |
| Options | Also supplied in Dallas / Cyfral / Metakom multi-format versions |
Inside the stainless can
Typical construction of this can format: a stainless-steel shell, an insulating grommet separating lid from base, and the chip bonded inside. Lid = data contact, base = ground return. Wall thickness, grommet material and other construction details: confirm for the supplied version.
Which blank does your duplicator write?
Blanks differ less in the finished key than in how the copier writes them. Protocol names follow the routines used in mainstream and open-source duplicator firmware — check the blank list in your machine's manual before ordering.
| Model | Key format | Write protocol | Rewritable? | Pick it for |
|---|---|---|---|---|
| RW1990 | Confirm the supplied version and target protocol | — | Rewritable ID; request version-specific endurance data | Confirm the write procedure, duplicator and firmware, then test a sample |
| RW1990.2 | Dallas 1-Wire | RW1990.2 | Rewritable | When the copier lists ".2" specifically |
| TM-01A | Dallas 1-Wire | TM-01 | Positioned as one-time write; confirm for the supplied version | Sites that prefer a one-time-write copy; test a sample on your duplicator |
| TM08v2 | Dallas + Cyfral + Metakom | RW1990.1 | Rewritable | One model for a mixed estate; test a sample on your duplicator |
| RW2004 / TM2004 | Dallas 1-Wire (+ multi-format versions) | TM2004 | Rewritable + writable memory block | Controllers that read data, not just an ID |
| RW2000 | Cyfral / Metakom | RW2000 (~8 V) | Designed for one-time write; confirm for the supplied version | Cyfral & Metakom doors, copy designed not to be re-written |
Typical applications
Frequently asked questions
When do I need RW2004 instead of RW1990?
When the system reads data from the key, not just its ID. RW1990 is offered for rewritable IDs, with the exact data format subject to the supplied documentation; the RW2004 (also sold as TM2004) adds a writable memory block, which is what controllers expecting memory-carrying credentials need. It also uses its own TM2004 write routine, separate from RW1990.1 and RW1990.2, so confirm your duplicator lists TM2004 support before ordering.
Related products
RW1990 Rewritable Blank
A rewritable TM blank for duplicating services.
RW1990.2 Rewritable Blank
RW1990.2 blank; confirm its version and required write procedure.
TM-01A One-Time Copy Blank (Dallas OTP)
One-time-programmable blank; confirm the source key and target equipment before ordering.
TM08v2 Multi-Format Blank
Multi-format blank; confirm the supplied version and your duplicator's support.