Send the following on WhatsApp
Continue to ChatExtending a wired doorbell with a wireless one https://www.piglets.org/blog/2014/07/21/extending-a-wired-doorbell-with-a-wireless-one/
Extending a wired doorbell with a wireless one https://www.piglets.org/blog/2014/07/21/extending-a-wired-doorbell-with-a-wireless-one/