Busch-Universal relay switch insert 230 V

3 wire connection (neutral conductor required). For Busch-Watchdog 180 flush-mounted Sensor Standard 6810-21x-101. For Busch-Watchdog 180 flush-mounted sensor Comfort II 6800-xxx-104 and 6800-xxx-104M. For Busch-Watchdog 180 FP sensor for All Weather 44 6800-3x-102C. For Busch-Watchdog Presence tech 6813-xxx-101 und 6813/11-xxx. For comfort timer control element 6455-101-500. Combinable with Busch-Watchdog extension insert 6805 U. Operation also possible via conventional push buttons (2020 US, 2021/6 UK).