Description

The Watchman Sonic is a wireless contents gauge, which uses an ultrasonic measuring technique that permanently measures the fuel level.

Readout: the tank’s contents can be read on the display in 10% increments per dThe Watchman Sonic is a wireless contents gauge, which uses an ultrasonic measuring technique that permanently measures the fuel level.

Readout: the tank content can be read on the display in 10% increments per dash, at 20% (2 dashes) a filler gun appears, at 10% (1 dash) the red light also comes on and you hear an alarm signal.

Content control and double wall control gives alarm if liquid leaks.ash, at 20% (2 dashes) a filler gun appears, at 10% (1 dash) the red light also comes on and you hear an alarm signal.

Content control and gives alarm if liquid leaks.