KUSCPWR-WS-240-33 Water Level Gauge

Can you use this gauge for two sending units? Example, two tanks and flip the gauge from tank #1 to tank #2 .

Will this work with any kind of sensor - float, internal, external?

Can you hook two of these guages to one water level sensory?

Is it possible to pop off the screen and access the wires from the front? My van builder boxed the sensor in and I can access it from behind.