The Class1 digital flowmeter system comes with the digital display, a paddlewheel transmitter and a connecting harness. A method of mounting the transmitter to the discharge is needed, call for options and specify the pipe diameter. The flow display includes a totalizer function. A momentary switch (optional) is required to operate this feature. The display will continuously monitor flow when the unit has power and display the latest total volume when the totalizer switch is pressed. The total flow is cleared when power is removed from the unit