FK900 Series General Interest Kits
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Kit makes a 3 level water indicator
FK902
$3.99
Kit makes a two tone signal generator
FK903
$3.99
Kit makes an interesting device that indicates the level of moisture in the soil
FK908
$3.99

Kit makes an interesting device that detects INFRARED rays. Can be used to check that TV remote control.
FK933
$3.99
Kit makes a light activated alarm. Possible use in Refridgerator as open door warning
FK911
$4.99
The in circuit TR checker device can examine both NPN and PNP transistors to check whether it is practical or not.
FK907
$4.99  $4.49

Kit makes a nice Water Sensor Alarm complete with speaker
FK910
$4.99
Kit makes a Non Contact AC Voltage Detector Click on "more info" for details and options
FK946
$4.99
Kit makes a low power voltage increaser. Can be used to demonstrate a very low power electrical shock
FK901
$5.99

Kit makes an interesting device that will set off an alarm when it rains
FK904
$5.99

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