Support iW18 FAQ

What is the function of the clock backup battery?

  • The unit comes with 1 CR2450 back-up battery installed to provide continuous alarm operation and clock settings in the event of a power failure. Remove the battery pull tab before use.
  • When the Battery icon located in the right of the display is flashing, it is time to replace the back-up battery. The battery compartment is located at the bottom of the unit.