Sub-line coupler including line supply as a kit 2-wire bus system REG. Sub-line coupler and line supply (kit) as a series-mounted housing for intercom system according to DIN EN 50486 in 2-wire technology. Sub-line coupler (REG 4 TE): Up to 8 sub-line couplers in a single line with a maximum of 32 indoor stations can be set up to form a system with 256 indoor stations. When using 8 couplers, 3 indoor stations can be operated in parallel, which makes a system with 24 parallel indoor stations possible. Power supply (REG 6 TE) coupled with LED displays for operating status of audio or video signal.
