The Channel Vision Home Intercom System consists of two basic components: P-0930 Home Intercom System CAT5e Hub and ST-2000 Home Intercom Station. The system can be expanded through the use of additional Home Intercom System CAT5e Hubs and home intercom stations. The ST-2000 provides direct call buttons for 6 home intercoms. The ST-2100 Home Intercom Station Expander can be used to add more direct call buttons in larger home intercom systems . If a front door intercom is required, Channel Vision’s popular IU Series or DP Series front door intercoms can be easily integrated as one of the intercom stations, and when used with the ST-C5IDS Door Strike Relay module, the system can activate an electronic door strike or gate opener.