AJAX Hub 2 2G User Manual page 30

connection fails, follow the instructions in the user guide for a respective
device.
Selection of location for installation
When choosing a location, consider three main factors:
Jeweller signal strength,
Wings signal strength,
cellular signal strength.
Locate Hub 2 in a place with stable Jeweller and Wings signal strength of
2–3 bars with all connected devices (you can view the signal strength with
every device in the list of states for a respective device in the Ajax app).
When choosing a place for installation, consider the distance between the
devices and the hub and any obstacles between the devices hindering the
radio signal passage: walls, intermediate floors, or large-size objects
located in the room.
To roughly calculate the signal strength at the place of installation, use our
radio communication range calculator
The cellular signal strength of 2–3 bars is necessary for the correct stable
operation of SIM cards installed in the hub. If the signal strength is 0 or 1
.