Go Direct® Motion Detector (GDX-MD)

It began shipping in March 2018.

Made of gray plastic and cube-shaped. Label is printed with Go Direct Motion. This sensor connects to your device using Bluetooth or USB cable. (Until fall 2023, units had a teal labels.)

This sensor ships with a removable USB cable for charging and USB data collection (computers, Chromebooks, and LabQuest units).

  • Compatible Software: Graphical Analysis, Graphical Analysis Pro, and LabQuest App (LabQuest 2 or LabQuest 3 only).
  • Maximum Sensing Distance: 3.5 m
  • Minimum Sensing Distance:
    15 cm—Motion (cart) sensor channel
    25 cm—Motion and Motion with TC sensor channels

Motion Detector (MD-BTD)

It began shipping in January 2005.

Green plastic, track mode switch under pivoting head, one LED on the right below the gold (or silver) screen. Motion Detector 2 printed on lower body, as well as Vernier logo printed near the bottom.

This Motion Detector shipped with a removable cable to connect it to an interface (e.g., any version of LabQuest, LabPro, SensorDAQ, or CBL2.)

  • Compatible Software: Logger Pro, Logger Lite, Graphical Analysis, Graphical Analysis Pro, LabQuest App, EasyData, DataMate, and DataQuest.
  • Maximum Sensing Distance: 6 m
  • Minimum Sensing Distance: 15 cm

How old is my Motion Detector 2?


Original Motion Detector (MDO-BTD, Discontinued)

It began shipping in 2001 and was discontinued in 2005.

Blue plastic, two LEDs below and to the left/right of the gold screen. Motion Detector printed on lower body above Vernier logo impression.

This Motion Detector shipped with a removable cable to connect it to an interface (e.g., any version of LabQuest, LabPro, SensorDAQ, or CBL2.)

  • Compatible Software: Logger Pro, Logger Lite, Graphical Analysis, Graphical Analysis Pro, LabQuest App, EasyData, DataMate, and DataQuest.
  • Maximum Sensing Distance: 6 m
  • Minimum Sensing Distance: 50 cm

Ultrasonic Motion Detector for ULI (MD-ULI-O, discontinued)

It began shipping in 1994 and was discontinued in 2015.

Blue plastic, no pivoting head, non-detachable cord ending in a clear telephone connector, one red LED below the gold screen. Printed with the words Ultrasonic Motion Detector on body.

For use with LabQuest, LabPro, SensorDAQ, or CBL 2. The CBL Adapter for ULI Motion Detector (order code: CBL-RJ11, discontinued) is needed.

  • Compatible Software: Logger Pro, Logger Lite, or LabQuest App.
    • This version does not Auto-ID, so it will only work with Graphical Analysis and Graphical Analysis Pro by data sharing from LabQuest 2, LabQuest 3, or Logger Pro.
  • Maximum Sensing Distance: 6 m
  • Minimum Sensing Distance: 50 cm

MPLI Motion Detector (MD-M, discontinued)

It began shipping in 1994 and was discontinued in 1999.

Blue plastic, no pivoting head, non-detachable cord ending in a round DIN connector, one red LED below the gold screen. Printed with the words Ultrasonic Motion Detector on body.

For use with LabQuest, LabPro, SensorDAQ, or CBL2. The CBL Adapter for MPLI Motion Detector (order code: CBL-8MC, discontinued) is needed.

  • Compatible Software: Logger Pro, Logger Lite, or LabQuest App.
    • This version does not Auto-ID, so it will only work with Graphical Analysis and Graphical Analysis Pro by data sharing from LabQuest 2, LabQuest 3, or Logger Pro.
  • Maximum Sensing Distance: 6 m
  • Minimum Sensing Distance: 50 cm

CBL Motion Detector (MD-CBL-O, discontinued)

It started shipping in 1996 and was discontinued in 1999.

Blue plastic, no pivoting head, non-detachable cord ending in white BTD connector, one red LED below the gold screen. Printed with the words Ultrasonic Motion Detector on body.

This Motion Detector shipped with a cable to connect it to any version of LabQuest, LabPro, SensorDAQ, or CBL2.

  • Compatible Software: Logger Pro, Logger Lite, Graphical Analysis, Graphical Analysis Pro, LabQuest App, EasyData, DataMate, and DataQuest.
  • Maximum Sensing Distance: 6 m
  • Minimum Sensing Distance: 50 cm

Go! Motion (GO-MOT)

It started shipping in 2005.

Go!Motion is functionally identical to the Motion Detector 2, and it adds a USB port for direct connection to a computer (Mac, Windows, or Chromebook) or LabQuest via USB cable.

For use with LabQuest, LabPro, SensorDAQ, or CBL2, the Digital Sensor Cable (MDC-BTD) (same cable as a standard Motion Detector), can also be used. For use with calculators, four AA batteries are required.

  • Compatible Software: Logger Pro, Logger Lite, Graphical Analysis, Graphical Analysis Pro, LabQuest App, EasyData, DataMate, and DataQuest.
  • Maximum Sensing Distance: 6 m
  • Minimum Sensing Distance: 15 cm

CBR 2 (CBR2)

It started shipping in 2005.

White and gray plastic with mode switch under the pivoting head. The CBR 2 is functionally identical to the Go!Motion. The only difference is the branding and the cables that are included in the package.

Originally shipped with two cables—one for connecting to a calculator I/O link port, the other for connecting to a mini-USB port on a TI-84 Plus calculator or TI-Nspire handheld. (In 2023, the I/O port was removed and the I/O cable was no longer included.)

4 AA batteries (included) are required when used direct connected to a calculator.

For use with LabQuest, LabPro or SensorDAQ, or CBL2, the Digital Sensor Cable (MDC-BTD) is needed.

  • Compatible Software: EasyData, DataQuest, DataMate, Logger Pro, Logger Lite, Graphical Analysis, Graphical Analysis Pro, and LabQuest App.
  • Maximum Sensing Distance: 6 m
  • Minimum Sensing Distance: 15 cm

Can I use my CBR 2 with Graphical Analysis, LabQuest App, or Logger Pro?


Texas Instruments CBR (discontinued)

It started shipping in 1997 and was discontinued in 2004.

Dark gray plastic. The sensor portion of the CBR is functionally identical to that in the Original Motion Detector, but this unit is made specifically to work with calculators. It shipped with a calculator link cable to connect it to a TI calculator.

4 AA batteries are required when used directly connected to a calculator.

For use with the LabQuest series of interfaces, LabPro or SensorDAQ, or CBL2, the Digital Sensor Cable (Digital Sensor Cable (MDC-BTD)) is needed.

  • Compatible Software: EasyData, DataQuest, DataMate, Logger Pro, Logger Lite, Graphical Analysis, Graphical Analysis Pro, and LabQuest App.
  • Maximum Sensing Distance: 6 m
  • Minimum Sensing Distance: 50 cm

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