Hydrolevel 650SV

The Hydrolevel 650SV is a 120V low water cut off designed for water boilers and hydronic heating systems. It protects boilers from damage by monitoring water level and features an automatic reset and a built-in test button with a status light for quick safety checks. This dependable unit pairs with standard controls like 45-651 to deliver reliable protection in residential or light commercial settings. Ideal for homes upgrading their heating safety, the 650SV is designed for straightforward installation with typical piping and wiring, with dependable performance year after year.

• 120V electrical supply for straightforward installation
• Accurate low water cutoff to prevent boiler dry-firing
• Auto reset after fault clears, minimizing manual intervention
• Built-in test button and indicator light for quick status checks
• Compatible with common boiler controls such as 45-651
• Durable, compact housing designed for long service life