The Honeywell 28mm Motorized 2-Port Zone Valve is a compact and efficient storage tank water heater designed for indoor use. With a sleek silver colour and a voltage of 240V, this corded electric valve operates on less than 100W of power. It is compatible with universal smart home systems and comes with a 1-year manufacturer warranty. The valve features a metal tank lining and a side water connection location, making it an ideal choice for heating systems relying on boilers. With an energy efficiency rating of A, the Honeywell 28mm Motorized 2-Port Zone Valve offers reliable and cost-effective heating solutions for your home.