This Watts 22C230NC4 230 Volt Normally Closed Actuator is a reliable and efficient addition to your heating system. Designed with four wires and a normally closed function, this actuator is perfect for controlling the flow of water in your underfloor heating system or radiator. Its brand name, Watts, is recognized in the industry for producing high-quality heating components. Ideal for use in residential and commercial settings, this actuator is a must-have for anyone looking to improve their heating system. With its easy installation process and durable design, you'll get years of reliable use out of this product.