Clarity AlertMaster Door Knock Transmitter

Clarity AlertMaster Door Knock Transmitter

The Clarity AlertMaster door knock transmitter can be purchased as an additional transmitter for AlertMaster visual notification systems. It is compatible with all AlertMaster systems.


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Does your door not have a doorbell or any sort of wiring to install a doorbell system? Now you won’t need to have one installed, thanks to the Clarity AlertMaster Door Knock Transmitter.

Simply put, the Door Knock Transmitter serves as a great alternative to doorbells. Whenever someone knocks on your door, the transmitter will send a signal up to 80 feet away to your AlertMaster receiver. The AlertMaster Door Knock Transmitter requires no wiring, making it easy to install on any door. It is powered by one 23A battery (included) that has an average life of 8-16 months, meaning you’ll have months of reliable service. 

Product Features

  • 80-foot range
  • Battery powered (one 23A battery included in package)
  • Compatible with all AlertMaster visual notification systems
  • Alerts you whenever someone knocks on your door
  • No wiring required – easy to set up

Additional information

Weight3 lbs
Dimensions7 x 4 x 3 in



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