Gauge diameter is 2 1/16in, Range: Empty=0 Ohm, Full=90 OhmBlack colored face with numbers in whiteCan be connected to a remote speaker for alarmsSending unit is mechanical with 90 degree sweepFeatures LED backlightingThis fuel pressure gauge helps to indicate the level of fuel contained in a tank. It features advanced LED backlighting and connectivity to a remote speaker for alarms. It is available in two sizes and includes gauge and fuel sensor for single engine applications.