Duct point temperature sensor with a 10K ohm NTC Type III sensing element. This unit has a 4-inch (10 cm) probe and 2 x 4 electrical box housing construction.
Immersion well temperature sensor with 1K ohm nickel sensing element (at 32 degrees Fahrenheit) in an all-metal housing. This sensor is Siemens compatible and measures 2.5 inches (5 cm) long.
Duct point temperature sensor with a 10K ohm NTC Type II sensing element. This unit has a 4-inch (10 cm) probe and 2 x 4 electrical box housing construction.