Review on Kidde P4010ACS-W Wire-Free Interconnect Hardwired Smoke Detector with 10-Year Battery Backup, Voice Alert, and Intelligent Technology by Francisco Taylor

I have to follow the instructions, not what you think, but what they really say. Setting up a wireless connection is super easy if you follow the instructions. take them all away Turn them on (knob all the way down) and on ONLY ONE of them, press the center button until you hear two beeps. Each of the currently activated OTHERS reports "Success, now connected". Then press and hold ONE key that you originally pressed for another 5 seconds or two beeps and it will say "Installation Complete". NOW you can install throughout your home.