Tariff Free Zone Jameco will remove tariff surcharges for online orders on in-stock items - Learn More »

MadLab Electronic Kit - Lie Detector

You may also like:
MK112 MK112
MK150 MK150
MK135 MK135
MK119 MK119
MK149 MK149
MK133 MK133
Price Reduced

$7.49 ea

72 ship on Jun. 1
More Available – 9 weeks


  • Jameco Part no.: 2251858
  • Manufacturer: MadLab
  • Manufacturer no.: MLP106
  • Electronics Parts Locator
# of units Price
1+ $7.49
5+ $6.95

Request a Large Quantity Quote

MadLab Electronic Kit - Lie Detector

The Lie Detector works by measuring galvanic response. In other words, when a person lies, they tend to sweat. Perspiration has a high sodium content, so sweat is conductive. Dry skin has a resistance of about 1 million ohms, whereas the resistance of moist skin is reduced by a factor of ten or more.

A person holding the probe wires will change the voltage at the upper probe wire depending on their skin resistance. The skin resistance is in parallel with R2 and, because it is likely to be similar to or smaller than R2, the voltage at the probe wire will fall as skin resistance falls. A 9V battery is required but not included.

Report a problem
Suggest a product
Specification Value
Design LevelBeginner Level


Report a problem
Suggest a product