Can I add more than one siren to my Sync Alarm?
Yes, you can add more than one siren. You can add additional devices from the Yale Home App, go the app menu, select “Add Device”, follow the instruction on the screen, activate the learning mode and then press the learn button on the device. (remove the siren cover to access to the siren learn button)
Please be aware that adding an additional siren will cause you to loose some of the management features