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Graham G3ZVT · 20th Jan 2019, 12:05 am

If you want to retain the wired chime, you need a relay to provide a pair of normally open, electrically isolated contacts.

20th Jan 2019, 12:05 am	#4
Graham G3ZVT Dekatron Join Date: May 2010 Location: Greater Manchester, UK. Posts: 18,725	Re: Extending old door bell by wireless If you want to retain the wired chime, you need a relay to provide a pair of normally open, electrically isolated contacts. Attached Thumbnails __________________ -- Graham. G3ZVT