N9951AU/030 Remote Control Capability option for viewing and controling FieldFox remotely uses an iOS device or an Android device. The Remote Viewer iOS app emulates the front panel of the unit, so users can simply press any FieldFox key right from their iOS device, including the hardkeys or softkeys. The iOS device and FieldFox communicate via a WLAN or broadband data connection. Without Option 030, users can remotely view the live display screen of their FieldFox, but cannot control the instrument.