Which blank fits which intercom: Vizit, Cyfral, Metakom, Eltis
A brand-by-brand table matching CIS intercom panels to the right key blank — RW1990 for the Dallas branch, RW2000 for Cyfral and Metakom, TM08v2 when one blank must cover everything, T5577 for RFID panels, and OTP blanks where re-copying is banned.
The wrong blank is the number-one cause of “the copy wrote fine but the door will not open”. The table maps panel brands and scenarios to the correct blank; the last rows cover the special cases — no-recopy rules and on-key data.
| Intercom / panel | Format branch | Blank to use | Notes |
|---|---|---|---|
| Vizit (contact TM key) | Dallas 1-Wire | RW1990 (or TM08v2) | The reference Dallas-branch case — every duplicator writes RW1990 first |
| Eltis | Dallas 1-Wire | RW1990 (or TM08v2) | Same branch as Vizit — one stock item covers both |
| Cyfral (2000A-series keys) | Own non-1-Wire format | RW2000 or TM08v2 | A plain RW1990 will not open a Cyfral door |
| Metakom (2002-series keys) | Own non-1-Wire format | RW2000 or TM08v2 | Handled by the same blanks as Cyfral |
| RFID panel — no metal contact recess (Vizit-RF, Eltis RFID and similar) | 125 kHz EM4100-class | T5577 keyfob or tag | The key is presented near the reader, not touched onto a contact |
| Controller reads data off the key, not just an ID | Dallas branch + on-key memory | RW2004 / TM2004 | The only blank here with a writable memory block beside the ID |
| Estate bans re-writable copies | Any branch | OTP: TM-01A (Dallas) / RW2000 (Cyfral, Metakom) | One-time-programmable — locks after writing, a copy cannot be re-copied onto it |
| Unknown or mixed estate — you cannot predict what walks in | Dallas + Cyfral + Metakom | TM08v2 universal | Three protocol families in one part number, written by RW1990-capable copiers |
Will an RW1990 blank work on a Cyfral door?
No — Cyfral and Metakom run their own non-1-Wire formats, so a Dallas-branch RW1990 stays silent on them. Copy onto an RW2000, or stock the universal TM08v2 which covers all three families.
Is there one blank that opens everything?
The TM08v2 emulates the Dallas, Cyfral and Metakom branches in one part number and is written with the familiar RW1990.1 routine. Its trade-off: it stays rewritable for life, so estates that ban re-copyable keys need OTP blanks instead.
How do I tell whether a panel is contact TM or RFID?
Look at the reading spot: a metal recess or button-shaped contact means contact Touch Memory; a flat plastic area you hold the key near means 125 kHz RFID — order T5577 fobs for those.
How do I identify the format branch in 30 seconds?
Check the panel logo first — Vizit and Eltis are Dallas-branch, Cyfral and Metakom are their own. Or read the customer’s key on your duplicator: an ID with family code 01 confirms Dallas; a key a Dallas copier cannot see at all is almost certainly Cyfral or Metakom.
Related products: RW1990 · RW2000 · TM08v2 · TM-01A · RW2004 · T5577
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