Carel passive temperature probes when connected to the controller, provide a resistance value which is then converted to a temperature by the electronic controller. The probes are used mainly in HVAC\/R applications and can accommodate all your needs in different installations. The series of temperature probes includes various models that differ based on the performance of the system and field of application.Probe Type = NTCProbe Length = 50mmProbe Diameter = 6mmMaximum Temperature Measurement = +105 °CCable Length = 6mBest Accuracy = ±1 %