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Classifieds - For Sale/Trade

Polygraph instruments manufactured in the U.S. are subject to export control laws and regulations of the United States. Individuals must comply with such Export Laws and obtain any license, permit or authorization required to transfer, sell, export, re-export or import the Products. Individuals cannot export or re-export the Products to any country or entity to which such export or re-export is prohibited, including any country or entity under sanction or embargoes administered by the U.S. Department of Commerce, U.S. Department of State, and U.S. Department of Treasury. Contact the manufacturer if you need assistance transferring ownership of polygraph instrumentation.


Please note we will only leave items listed for 60 days, after which time we will delete it.  If the listing party would like to relist the item, please contact us at polygrapheditor@gmail.com.










posted 06.19.2026


For Sale: Used Lafayette LX4000 and LX5000 Polygraph Systems – As Is

These polygraph units are sold strictly as is. The LX4000 was last used in March 2026. The LX5000 was last used in June 2026. Both have been stored in a climate-controlled office in Texas.

Key buyer warnings (starting with limitations):

Equipment is used and sold with no warranties expressed or implied.

Past working condition at last use does not guarantee current functionality, software compatibility, or performance after shipping.

Buyers assume full responsibility for testing, maintenance, parts availability, regulatory compliance in your area and suitability for professional use in your jurisdiction. Polygraph systems require proper examiner training and ongoing service.

Seller makes no claims about present working order or fitness for any specific purpose.

No overseas sales. U.S. buyers only. Price excludes shipping — actual cost from Houston, Texas area will be added.




LX4000 Polygraph Unit

Asking Price: $2,700.00 OBO Last used: March 2026

Includes:

  • 1 LX4000 Data acquisition unit
  • 1 LX4000 Seat motion sensor
  • 1 LX4000 Forearm blood pressure cuff
  • 1 LX4000 Standard arm blood pressure cuff
  • 3 LX4000 Sphygmomanometer with pump bulb (2 still in original box)
  • 1 LX4000 EDA Cable with plates/snaps (for disposable electrodes)
  • 3 LX4000 Auxiliary cables (to connect seat and feet sensors; feet sensors not included)
  • 6 LX4000 Pneumo tubes with full connections
  • 2 LX4000 Pneumo tubes with tubes but no connectors at the data acquisition unit
  • 2 LX4000 Cables (connects data acquisition unit to computer with USB connector)

LX5000 Polygraph Unit

Asking Price: $3,600.00 OBO Last used: June 2026

Includes:

  • 1 LX5000 Data acquisition unit
  • 1 LX5000 Seat sensor
  • 1 LX5000 Foot sensor
  • 1 LX Forearm blood pressure cuff
  • 1 LX5000 Extra-large forearm blood pressure cuff
  • 1 LX5000 Standard arm blood pressure cuff
  • 3 LX5000 EDA cables with plates/snaps (for disposable electrodes)
  • 1 LX5000 PLE (Photo plethysmograph)
  • 4 LX5000 Cables to connect seat, feet, and arm sensors (arm sensors not included)
  • 6 LX5000 Pneumo tubes with full connections
  • 3 LX5000 Sphygmomanometer with pump bulb
  • 1 LX5000 Cable (connects data acquisition unit to computer with USB connector)

Contact: Jerry D. Thomas Thomas Polygraph Services LLC Email: polygraphjdthomas@gmail.com Phone: (936) 760-2535 Address: 14888 Hwy 105 W, Suite 111, Montgomery, TX 77356


posted 06/12/2026


New CPS Pro Elite Instrument. All brand-new sensors and comes with
an extra set of Velcro electronic respiration sensors in addition to the
pneumo-tubes, BP Cuff, PLE, EDA plates, palm sensors, “C” high speed
connection power cable, and seat sensor with hard carrying case. The
instrument was purchased and is owned by a municipal police
department with the intent of starting a polygraph unit, but it never
materialized. This instrument if ordered New with displayed equipment
would be $8200.  Asking 6,800

Please contact Chris Burne at burnepolygraph@gmail.com or cell 815-405-2923 (I’m
using personal information since my retirement date is so close. I’m going to work to get this sold even
after I’ve left)







posted 04/03/2026

For sale is a Stoelting CPS Pro instrument with about 1,100 tests on it and which is approximately eight years old. The price includes all attachments, including a camera, motion sensor seat pad, a photoplethysmograph attachment, extra adhesive pads for the EDA hand sensors, and a Pelican case.  Shipping and handling costs are negotiable.  Asking $2,000.00 obo.

Cellphone 630-699-0946