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9845 LEGO Mindstorms NXT Sound Sensor thumbnail image

9845 LEGO Mindstorms NXT Sound Sensor
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9845 LEGO Mindstorms NXT Sound Sensor
  • Sound Sensor thumbnail
  • Sound Sensor thumbnail

LEGO 9845 Sound Sensor is a Mindstorms set from 2006 currently valued at $58 for new and sealed sets. Originally retailing for $34.99, the set has gained 65% in value since retiring in January 2016, with annual appreciation averaging 4.86%. On the used market, values range from $8 to $11 based on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Sound Sensor since September 2016. High accuracy
LEGO 9845-1 Sound Sensor is a Mindstorms NXT set released in 2006, containing 1 piece. It is an add-on sensor for the LEGO MINDSTORMS NXT system that allows compatible robots to react to sound commands and audio levels. The sensor can detect both decibels (dB) and adjusted decibels, which are measurements of sound pressure. It requires LEGO MINDSTORMS NXT set 8527 or 8547 for use.

A new and sealed Sound Sensor is currently valued at around $58, with annual growth of approximately 5%, which is higher than other NXT sets. The average used price is $9 for those in good overall condition. Based on current trends, this set could be valued near $60 within the next year. The set was available for 99 months, from October 2007 to January 2016.
Sound Sensor has become a rare set, as set 9845-1 has not been seen for sale in new/good condition online or in retail for over one year. Its actual value is likely above the current estimate. The last brand new Sound Sensor was sold on eBay.

For Sale (New/Sealed)

There are currently no new/sealed listings available for 9845 Sound Sensor at this time.
All regions

For Sale (Used)

 (US) Used - BrickLink store Red Mountain Bricks $8.00
(US) Used - NXT Sound Sensor (9845-1) Tested and Working
$9.01
(UK) Used - tested and working $10.78
(CA) Used - BrickLink store The Bricks Hunters $11.12
(BE) Used - BrickLink store QBrick $11.55

Sets in Mindstorms / NXT

8527 Mindstorms NXT

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 577
Availability Retired
8527 LEGO Mindstorms NXT
Retail $249.99
Value $405.08
Growth  +62.0%
Annual growth 2.3%

8529 Connector Cables for Mindstorms NXT

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 7
Availability Retired
8529 LEGO Connector Cables for Mindstorms NXT
Retail $9.99
Value $19.98
Growth  +100.0%
Annual growth 3.7%

8528 Converter Cables for Mindstorms NXT

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 3
Availability Retired
8528 LEGO Converter Cables for Mindstorms NXT
Retail $9.99
Value $36.39
Growth  +264.3%
Annual growth 9.6%

9798 Rechargeable Battery

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9798 LEGO Mindstorms NXT Rechargeable Battery
Retail $54.99
Value $59.29
Growth  +7.8%

9833-2 Transformer

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9833-2 LEGO Mindstorms NXT Transformer
Retail $23.99
Value $31.80
Growth  +32.6%
Annual growth 2.1%

9841 NXT Intelligent Brick

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9841 LEGO Mindstorms NXT Intelligent Brick
Retail $169.99
Value $326.87
Growth  +92.3%
Annual growth 6.5%

9842 Interactive Servo Motor

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9842 LEGO Mindstorms NXT Interactive Servo Motor
Retail $24.99
Value $28.24
Growth  +13.0%
Annual growth 2.6%

9843 Touch Sensor

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9843 LEGO Mindstorms NXT Touch Sensor
Retail $24.99
Value $32.36
Growth  +29.5%
Annual growth 3.7%

9844 Light Sensor

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9844 LEGO Mindstorms NXT Light Sensor
Retail $24.99
Value $16.99

9846 Ultrasonic Sensor

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9846 LEGO Mindstorms NXT Ultrasonic Sensor
Retail $39.99
Value $45.76
Growth  +14.4%
Annual growth 1.3%

9847 Bluetooth Dongle

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9847 LEGO Mindstorms NXT Bluetooth Dongle
Retail $32.50
Value $32.00

Compass Sensor for Mindstorms NXT

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
LEGO Compass Sensor for Mindstorms NXT
Retail $54.99
Value $73.84
Growth  +34.3%
Annual growth 3.7%

My Collection

Sound Sensor Reviews

25 reviews
4.7
Collectors
Investors
LEGO Engineering
“The Sound Sensor can measure sound pressure levels up to 90 dB – about the level of a lawnmower. Sound pressure levels are extremely complicated, so the Sound Sensor readings on the MINDSTORMS NXT are displayed in percent [%]. The lower the percent the quieter the sound.”
Full review at www.legoengineering.com

About Mindstorms NXT

The LEGO Mindstorms NXT programmable robotics kit released by LEGO in July 2006, replacing the first-generation LEGO Mindstorms kit. The kit also includes NXT-G, a graphical programming environment that enables the creation and downloading of programs to the NXT.

NXT consists of 30 sets that ran from 2006 to 2011. As of today, 8527 Mindstorms NXT is the most valuable NXT set with an estimated new/factory sealed value of $405.
Summary
Mindstorms NXT Sound Sensor set 9845 was released on October 24, 2007, retailing for $35, it has since been retired. New, unopened sets are valued at $58, used ones can be found for $9.
Read more
Your robot's "ears!

Using the NXT Brick (sold separately), the Sound Sensor allows your LEGO® MINDSTORMS® NXT robot to hear! The Sound Sensor is able to measure noise levels in both dB (decibels) and dBA (frequencies around 3–6 kHz where the human ear is most sensitive).

Includes 1 Sound Sensor.
Does not include connector cable.
This is the individual component, and does not include the NXT Intelligent Brick, software or any accessories. It requires the complete LEGO MINDSTORMS NXT set (#8527 or #8547) for use.
Description provided by LEGO©