RB120S is used for alarm transmission over the public telephone network. The transmitter can be connected to RBE1 port B with a supplied cable. The dialing settings are set via the 2010 Omnis software. When the RB120S is connected to RBE1 the protocols SIA II, Robofon, LA100, and P100 are available (Note that this requires Bewator 2010 4.1 SP3 or higher). It is also possible to use the alarm transmitters alarm inputs. These can be programmed to send individual alarm notifications with a special configuration program (Prom.exe).