Card Reader (TBS):
There are three ways:

1. Sticker on the side of the card reader

2. Restart the system (briefly disconnect the power and turn it back on) – the Unit ID will briefly appear on the display

3. With a dial-in card (for technicians only) – the Unit ID will then be displayed on the screen

TFSU Solo / Fill Level Sensor:

• The Unit ID is on the sticker on the side of the sensor