The UVK1200 consists of an air bell connected via a plastic hose to a pressure switch housed within a casing. In addition to the relay output, the UVK1200 has a secondary output that can trigger a signal/alarm if the water level becomes excessively high, for example, due to a power outage or pump failure, or if the pump is unable to keep up. (Professional)
Current: 20A
Voltage: 12/24V