Hydrolevel low water cut-offs are electrically operated. A probe is installed in the boiler shell or external manifold and is connected to the control unit. Water is used as a conductor to complete the circuit between the probe and the boiler shell. When water is in contact with the probe, the circuit is completed; when the water level drops below the probe, the circuit opens. Hydrolevel controls provide contacts to de-energize the burner circuit in a low water condition.
Reliable Electronic Operation
- Low Maintenance
- Easy to Install
- Inexpensive to Own and Operate
- 100% Factory Tested

| Application: | Hot Water Boilers |
| Switch: | SPST |
| Max Pressure (PSI): | 50 |
| Type: | Electronic |
| Reset Type: | Automatic |
| Voltage: | 24v |
| Pilot Duty Rating: | 125 VA |
| Power Consumption: | 1 VA |
| Max Temp (F): | 250°F |