Cambond (99% positive feedback lifetime) via Amazon offers its wireless, waterproof, battery-operated doorbell kit with one transmitter and two receivers for $15.99 Prime shipped when code QJLARU9B is used at checkout. Normally $23, this is the lowest we’ve tracked and the best available. If you need to upgrade to a wireless doorbell, this is a great bundle that has two transmitters. Rated 4.5/5 stars.

Nomad Base Station

Cambond Wireless Doorbell Kit features:

  • 500ft / 150m Long Wireless Range, and the doorbell with two receivers to ensure never missing a visitor when you are in the upstairs or another room
  • You can also add transmitters or receivers depending on your need
  • IP44 waterproof doorbell transmitter can be used outside in rain or shine
  • Ideal wireless doorbell for home, villas, office, business, commercial space and could be used as a paging system for the elderly or children

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