You have to open the back lid of the Zigbee Button to replace the battery. It is using CR2032 button cell.
You may check the battery level on the Aztech KylaS app. The app will also send an alert to the user when the battery level is below 20%.
You cannot disable emergency alarm manually. The emergency alarm will be active for three (3) minutes before it return to normal.
Press and hold the reset button for five (5) seconds and the LED light will flash slowly for three (3) seconds.