Last Edited by Dealzcat
October 8, 2018
What I wish I would have known in linking. A--There is only one button on each unit. I will call it the Test/Silence button since that is what it is labeled. 1--The first unit you turn on becomes the master unit. 2--When you turn on additional units you must hold the Test/Silence button as you are pushing in the battery pack. Only release the Test/Silence button once you have heard a single short beep. This beep should happen within a few seconds. Immediately push the Test/Silence button on the master unit (first unit powered on). This will link the two units. 3--When turning on the 3rd unit hold the Test/Silence button as you push in the battery pack. Again, once you have heard the beep, release and immediately push the Test/Silence button on the master unit (first unit powered on). This will link the 3rd alarm.
(From Costco Review and verified by me during my installation)
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