Honeywell L641A Cylinder Thermostat

The L641A Cylinder Thermostat is designed for surface mounting on domestic hot water cylinders. It can be used to switch directly a wet central heating circulating pump or boiler, or to operate spring return and motor open/motor close zone valves.

Features

• Ideal for general applications
• Suitable for use on uninsulated and foam lagged cylinders
• Surface mounted
• Double insulated
• Dial or screwdriver slot temperature adjustment
• Cylinder strap & hooks