When you have a display of 0, 1, 2, 3, 4, 5, or 6 your Cel-Fi system has established a connection but is not working to the fullest ability.
Try this… move your units further apart. If you have a particular spot in your home that you want coverage more than others try installing your Cel-Fi system in reverse. Put your Coverage Unit where you need coverage the most then place your Window Unit at the furthest location where you can get at least 1 bar of service.
If you cannot get your systems further apart, and you have the coverage you need, a higher number is not always possible or necessary.
When you have a solid “0” zero display you may also see a flashing green power indicator. This display indicates that your Window Unit and Coverage Unit are “Too Close” together. Try moving the units further apart, starting with the Coverage Unit.