{"id":6482,"date":"2026-05-18T07:17:26","date_gmt":"2026-05-18T07:17:26","guid":{"rendered":"https:\/\/thingsinnet.com\/?post_type=product&#038;p=6482"},"modified":"2026-05-18T16:51:05","modified_gmt":"2026-05-18T16:51:05","slug":"4x4-matrix-16-key-rigid-plastic-matrix-keyboard-keypad-module","status":"publish","type":"product","link":"https:\/\/thingsinnet.com\/?product=4x4-matrix-16-key-rigid-plastic-matrix-keyboard-keypad-module","title":{"rendered":"4&#215;4 Matrix 16-Key Rigid Plastic Matrix Keyboard Keypad Module"},"content":{"rendered":"<p>This heavy-duty 4&#215;4 Matrix Keypad is engineered for projects that require a professional-looking, robust user input panel. Built with hard-wearing plastic keycaps housed in a solid structural frame, it handles continuous wear and tear much better than soft membrane sheets or bare PCB switches.<\/p>\n<p><strong>Key Features:<br \/>\n<\/strong><b data-path-to-node=\"6,0,0\" data-index-in-node=\"0\"><\/b><\/p>\n<ul>\n<li><b data-path-to-node=\"6,0,0\" data-index-in-node=\"0\">Professional, High-Contrast Keycaps:<\/b> Molded with bold, clear white lettering (<b data-path-to-node=\"6,0,0\" data-index-in-node=\"78\">1\u20139, 0, *, #, A, B, C, D<\/b>) that won&#8217;t fade or wear away easily with frequent use.<\/li>\n<li data-path-to-node=\"6,1,0\"><b data-path-to-node=\"6,1,0\" data-index-in-node=\"0\">Industrial\/Enclosure-Friendly Design:<\/b> Features dedicated perimeter mounting holes on the outer frame, making it perfect for flush panel-mounting onto project boxes or custom control faces.<\/li>\n<li data-path-to-node=\"6,2,0\"><b data-path-to-node=\"6,2,0\" data-index-in-node=\"0\">Tactile and Silent Feedback:<\/b> Provides a sturdy, responsive mechanical key travel with a quiet press action compared to loud clicking metal tactile domes.<\/li>\n<li data-path-to-node=\"6,3,0\"><b data-path-to-node=\"6,3,0\" data-index-in-node=\"0\">Pin-Saving 4&#215;4 Matrix Output:<\/b> Saves significant microcontroller pin space by routing 16 separate inputs through a standard 8-pin interface header using row\/column matrix scanning.<\/li>\n<\/ul>\n<p><strong>Technical Specifications:<\/strong><\/p>\n<table data-path-to-node=\"9\">\n<thead>\n<tr>\n<td><strong>Feature<\/strong><\/td>\n<td><strong>Specification<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-path-to-node=\"9,1,0,0\"><b data-path-to-node=\"9,1,0,0\" data-index-in-node=\"0\">Keyboard Layout<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,1,1,0\">4 Rows x 4 Columns Matrix (16 Keys)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"9,2,0,0\"><b data-path-to-node=\"9,2,0,0\" data-index-in-node=\"0\">Key Legends<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,2,1,0\">0 to 9, A, B, C, D, *, #<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"9,3,0,0\"><b data-path-to-node=\"9,3,0,0\" data-index-in-node=\"0\">Keycap Material<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,3,1,0\">Rigid ABS Plastic \/ Semi-rigid Industrial Rubber<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"9,4,0,0\"><b data-path-to-node=\"9,4,0,0\" data-index-in-node=\"0\">Interface<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,4,1,0\">8-Pin Output Header (Male Solder Pads \/ Pin Rows)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"9,5,0,0\"><b data-path-to-node=\"9,5,0,0\" data-index-in-node=\"0\">Pin Pitch<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,5,1,0\">Standard 2.54 mm (0.1&#8243;)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"9,6,0,0\"><b data-path-to-node=\"9,6,0,0\" data-index-in-node=\"0\">Max Contact Rating<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,6,1,0\">24V DC \/ 20mA<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"9,7,0,0\"><b data-path-to-node=\"9,7,0,0\" data-index-in-node=\"0\">Insulation Resistance<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,7,1,0\">\u00a0&gt;100mega ohms at 100V<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"9,8,0,0\"><b data-path-to-node=\"9,8,0,0\" data-index-in-node=\"0\">Dielectric Strength<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,8,1,0\">250V Rms (50-60Hz, 1 min)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"9,9,0,0\"><b data-path-to-node=\"9,9,0,0\" data-index-in-node=\"0\">Mechanical Life<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,9,1,0\"><span class=\"math-inline\" data-math=\"\\ge 1,000,000\" data-index-in-node=\"0\">&gt;1,000,000<\/span>\u00a0operations per key<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"9,10,0,0\"><b data-path-to-node=\"9,10,0,0\" data-index-in-node=\"0\">Operating Temperature<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,10,1,0\">-20\u00b0C to +60\u00b0C<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-path-to-node=\"9,11,0,0\"><b data-path-to-node=\"9,11,0,0\" data-index-in-node=\"0\">Dimensions<\/b><\/span><\/td>\n<td><span data-path-to-node=\"9,11,1,0\">Approx. 65mm x 60mm (Compact frame size)<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Pinout Configuration (8 Pins)<\/strong><\/p>\n<p data-path-to-node=\"12\">The module breaks out to an 8-pin interface representing the overlapping grid:<\/p>\n<ul>\n<li><b data-path-to-node=\"13,0,0\" data-index-in-node=\"0\">Pins 1\u20134:<\/b> Row Lines (R1, R2, R3, R4)<\/li>\n<li><b data-path-to-node=\"13,1,0\" data-index-in-node=\"0\">Pins 5\u20138:<\/b> Column Lines (C1, C2, C3, C4)<\/li>\n<\/ul>\n<p><strong>Common Applications:<\/strong><\/p>\n<ul>\n<li data-path-to-node=\"16,0,0\"><b data-path-to-node=\"16,0,0\" data-index-in-node=\"0\">Security &amp; Access Systems:<\/b> Digital pin-code entry panels for automated door locks or gates.<\/li>\n<li data-path-to-node=\"16,1,0\"><b data-path-to-node=\"16,1,0\" data-index-in-node=\"0\">Industrial Equipment:<\/b> Menu navigation and numerical data input on commercial machines.<\/li>\n<li data-path-to-node=\"16,2,0\"><b data-path-to-node=\"16,2,0\" data-index-in-node=\"0\">ATM\/Vending Machine Emulators:<\/b> Simulating point-of-sale terminal keypads.<\/li>\n<li data-path-to-node=\"16,3,0\"><b data-path-to-node=\"16,3,0\" data-index-in-node=\"0\">Advanced Arduino\/MCU Projects:<\/b> Custom control desks, home security setups, and standalone computing inputs.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This heavy-duty 4&#215;4 Matrix Keypad is engineered for projects that require a professional-looking, robust user input panel. Built with hard-wearing plastic keycaps housed in a solid structural frame, it handles continuous wear and tear much better than soft membrane sheets or bare PCB switches. Key Features: Professional, High-Contrast Keycaps: Molded with bold, clear white lettering [&hellip;]<\/p>\n","protected":false},"featured_media":6483,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[36,23],"product_tag":[],"class_list":["post-6482","product","type-product","status-publish","has-post-thumbnail","product_cat-keypad_and_joystick_modules","product_cat-modules-and-sensors","product_shipping_class-0-5-kg","first","instock","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/thingsinnet.com\/index.php?rest_route=\/wp\/v2\/product\/6482","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thingsinnet.com\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/thingsinnet.com\/index.php?rest_route=\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/thingsinnet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6482"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/thingsinnet.com\/index.php?rest_route=\/wp\/v2\/media\/6483"}],"wp:attachment":[{"href":"https:\/\/thingsinnet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6482"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/thingsinnet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_brand&post=6482"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/thingsinnet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=6482"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/thingsinnet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=6482"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}