The L641 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.

• Double insulated
• Surface mounted
• Suitable for use on uninsulated and foam cylinders
• Plastic coated, expanding coiled wire fixing kit
• Knob or screwdriver slot temperature adjustment
• Cable clamp
• 40 - 80 Deg C