Connecting to your Nexus unit
From the home screen, press either Single Machine or Multi Machine to enter the unit configuration screen. From the main configuration screen, press the Connect button to list all units within Bluetooth range of the app. When you have selected your unit type in the passcode (default 1111) and press Connect. The app will ask if you wish to read the data from the dispenser or leave the settings on the current screen and begin to download. You are now connected to your unit.
In order to Connect to a new unit, you will need to Disconnect from the original unit. To do this, navigate down to the Disconnect icon in the left hand tool bar. Pressing this will stop the current connecting and allow the Connect menu to be activated again.