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<p><strong><span style=”font-size:18px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Description</span></span></strong><br />
<span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Punch in your secret key into this numeric matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3×4 grid. It's made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 7 microcontroller pins (3-columns and 4-rows) to scan through the pad. </span></span><br />
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<p><strong><span style=”font-size:18px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Key Features:</span></span></strong></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Ultra-thin design & adhesive backing provides easy integration to any project</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Excellent price-performance ratio</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Easy communication with any microcontroller </span></span></p>
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<p><strong><span style=”font-size:18px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Application Ideas:</span></span></strong></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Security systems</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Menu selection</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Data entry for embedded systems </span></span></p>
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<li><strong><span style=”font-size:18px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Features:</span></span></strong></li>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Interface: 7-pin access to 3×4 matrix</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Rebound time: 1 ms</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Life Expectancy: 1 million closures</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Dimensions: Keypad: 70 * 77 mm</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Cable: 2.0 * 7.0 cm</span></span></p>
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<p><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”>Operating temperature: 0°C to 50°C</span></span></p>
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<li><span style=”font-size:14px;”><span style=”font-family:Arial,Helvetica,sans-serif;”><a href=”https://www.circuitbasics.com/how-to-set-up-a-keypad-on-an-arduino/”><span style=”color:#3498db;”>Tutorial: HOW TO SET UP A KEYPAD ON AN ARDUINO</span></a></span></span></li>
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