With most products, you can add additional door openers or doorbells to expand the system or replace parts.


The table below shows which parts are compatible/exchangeable. You can check the model number of the system you are currently using on the back of it.


Exemple:


The code of the product starts with:
Compatible with:
RX, SX or SXi
(RX85, SX80, SX201i.....)
These are out of range and no longer being delivered.
DBxxx range
(DB301, DB302, DB333….)

Door button not available separately.


Compatible with other DBxxx and Bxxx doorbell series from after 2014

Bxxx range
(B304, B305, B322....)

Door button not available separately.


Compatible with other DBxxx and Bxxx doorbell series from after 2014

BYxxx range
(BY101, BY202, BY301, BY401….)

Compatible with all BYxxx model doorbells.


Look for the logo below on the packaging





BY30, BY32, BY33, BY34, BY35 & BY37
DBY-xxxx range
(DBY-23512, DBY-22321, DBY-22311....)

Compatible with all DBY-xxxx models working at 433mhz.


Look for the logo below on the package




DBY-23510 & DBY-23610