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

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

Kit makes an interesting device that detects INFRARED rays. Can be used to check that TV remote control.
Kit makes a Non Contact AC Voltage Detector Click on "more info" for details and options
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!

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

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