The Vaillant negative temperature coefficient thermistor sensor works by decreasing current resistance in a manner that is inversely proportional to the temperature of the thermistor. The electronic control sends a current to the thermistor and can tell whether an increase or decrease in heat is needed.

Brand Name	Vaillant
Colour	None
Material	None
Manufacturer Model No	0020045972
Wear Type	None
Type	Thermistor
Certifications Met	None
Country of Origin	None
Protects From	None
Waterproof	None
Number of Pockets	None
Waist Size	aa99cj38fx
Compatible With	Vaillant VU 466/4-5 (2007 - 2010) and Vaillant VU 656/4-5 (2007 - 2010)
Supplier Part Number	0020045972