The fill level sensor is inherently operated with 230V AC voltage. In most cases, this is also the most sensible approach, as, for example, 230V is already available in many cisterns for operating a pump. Alternatively, operation with 5V DC is also possible. Inside the housing, there is a USB-C port through which a 5V power supply can be provided. There is also a JST PH 2.0 socket through which the 5V supply voltage can be fed. The pinout is labeled on the circuit board next to the socket.

Make changes to the power supply only with appropriate technical expertise or have them carried out by a specialist. When opening the housing, always ensure that the sensor is not connected to the power supply. When supplying with 5V, ensure that the power supply unit is adequately dimensioned (min. 1A). It should also be noted that any modification to the housing voids the warranty and guarantee claims. It is therefore recommended to use the existing cable gland of the 230V cable also for the 5V supply. Use a suitable wire cross-section to ensure that the housing remains protected from moisture ingress.