FK900 Series General Interest Kits
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Kit makes a Low Battery Alarm or Sensor Device
FK915
$5.99
Kit makes a low power voltage increaser. Can be used to demonstrate a very low power electrical shock
FK901
$5.99
Kit makes a 3 level water indicator
FK902
$3.99

Kit makes a two digit electronic counter
FK926
$10.99
Kit makes an interesting device that detects metal objects near the coil on the circuit
FK919
$10.49
Kit makes a 4 digit electronic counter, presettable Assembled and tested now in stock!!
FK936
$17.99

Kit makes an interesting device that detects INFRARED rays. Can be used to check that TV remote control.
FK933
$3.99
Kit makes a Non Contact AC Voltage Detector Click on "more info" for details and options
FK946
$4.99
This circuit uses the principle of skin moisture volume detecting. Telling a 'lie' will increase skin moisture volume allowing this circuit to detect whether the test subject is "lying" or not. For entertainment purposes only!
FK940
$5.99

Kit makes a 20 to 60 second digital sound recorder. Can be recorded over and over 100,000 times with included Microphone & Speaker included
FK941
$24.99

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