The IBC Technologies P-849 DHW Flow Sensor is a precision component designed to detect domestic hot water (DHW) flow in compatible IBC heating systems. It monitors water movement and signals the boiler controls when hot water demand is detected, allowing the system to activate heating as needed. This sensor is used with IBC SFC Series combi boilers, supporting reliable on-demand DHW o... https://www.partshnc.com/p-849-ibc-technologies-dhw-flow-sensor