Ferroli sensor - 1k ptc domestic hot water / ch (wet)

This Ferroli sensor is a domestic hot water central heating device suitable for use in Combi, Optima, Talent, Hawk and Xignal boilers. The sensor is employed to increase circuit resistance in line with temperature drops. A boiler's printed control board (PCB) sends a current to the thermistor, deciding whether a decrease or increase in heat is required by reading the relative resistance