Velleman ARD-T000200 Arduino TinkerKit Thermistor Module
The Thermistor is a resistor whose resistance varies significantly (more than in standard resistors) with temperature.
Output: This module's output approaches 5 V as the temperature increases. As the temperature decreases, it approaches 0 V. When connected to an input on the Arduino using the TinkerKit Shield, expect to read values between 0 and 1023.
(Note: any changes in the values will be slow and may not vary a great deal.)
Module description: This module features a thermistor, a signal amplifier, the standard TinkerKit 3-pin connector, a green LED that signals that the module is correctly powered, and a yellow LED whose brightness changes according to the temperature.
This module is a SENSOR. The connector is an OUTPUT which must be connected to one of the INPUT connectors on the TinkerKit Shield.