Trisense AS designs and develops Android Companion Apps for connection to the Fusion sensors. Our apps utilizes Bluetooth 5 for local connection to the sensors by means of a Smart Phone or a Tablet. The apps are also used for set-up and calibration of the sensors. In order to save the sensor battery life time, the Fusin IIoT sensors are delivered from stock in a deep sleep mode. The Fusion companion app may also be used to send a “wake up command” to make the device ready for normal operation. The Fusion companion Apps may be downloaded from Google Play Store.