Resideo L4008E1040 Manual Reset High Limit Aquastat Controller W/Remote Bulb 130°F-270°F

The Resideo L4008E1040 Manual Reset High Limit Aquastat Controller is a safety device designed for boiler, water heater, and hydronic heating system applications. The device tracks water temperature from 130°F to 270°F through its remote bulb sensor. The controller stops the system from running when water temperature hits the high limit and requires user intervention to restart the system. The system protects equipment better while reducing the chance of overheating accidents. It helps to control temperature effectively which makes HVAC systems work better and last longer. The controller's exact temperature management makes it necessary for ensuring safe and optimal heating system performance.