LEGO 9755 Temperature Sensor is a Mindstorms set from 1999 valued at $27 for new and sealed sets, up 13% from an original retail price of $23.99. Annual appreciation has averaged 0.44% since release. Used copies are valued between $11 and $13 depending on condition.
LEGO 9755 Temperature Sensor is a Mindstorms accessory set released in 1999, containing 1 piece. It includes a cabled temperature sensor element that connects to the RCX brick in the first-generation Mindstorms system. Using the Mindstorms programming software, builders can read ambient temperature and trigger program actions based on thresholds or changes. It was sold as an add-on component for expanding Robotics Invention System builds.
A new and sealed Temperature Sensor is currently valued at around $27. The average used price is $11 for those in good overall condition. Based on current trends, this set could be valued near $27 within the next year.
Temperature Sensor (9755-1) is a very old and rare LEGO set. It has not been available online or in retail stores in good/new condition for over 2 years. Because of its scarcity, the current estimated value of in new condition of $27.03 may be much lower than its true market value. Released in 1999, sealed sets in good condition are especially difficult to find, often commanding a premium well above estimates.
There are currently no new/sealed listings available for 9755 Temperature Sensor at this time.