Relay insert flex 1 gang(s) 230 V +/-10%

3 wire connection (neutral conductor required). For switching lighting systems. Operation in 1gang 2way installations via push button input. Operation also possible via conventional push buttons (2020 US, 2021/6 UK). Without control unit. For control element flex, 1gang, 64711. For control element flex, 1gang, wireless, 62711-WL. For control element flex, 2gang, 64721. For control element flex, 2gang, wireless, 62721-WL. For Busch-Comfort switch flex control element 64765-... . For Busch-Watchdog 180 flex sensors 6476x-... . For Busch-Watchdog 180 flex sensors, wireless, 6276x-...-WL. For Busch-Presence detector flex sensors 6475x-... . Combinable with extension insert, 64891 U.