PC alarm transmitter is a separate software installed on an PC/server via which it connects to RBSServer. PC alarm transmitter can send alarm information via SMS, e-mail and the SOS Access V4 interface. To be able to send SMS a separate module is required. The text that is sent is the same text that appears in the event queue. When e-mail is used an action plan and contact list can be sent with the alarm message. With PC-AT500 the number of connections in 2010 Omnis that can connect to the PC alarm transmitter is limited to 500 connections.