{"product_id":"4x4-membrane-keypad","title":"4x4 membrane keypad","description":"\u003cmeta name=\"description\" content=\"Buy 4x4 membrane keypad online in India at best price from The Tech Depot, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n```html\n\u003ch1\u003e4x4 Membrane Keypad\u003c\/h1\u003e\n\u003cp\u003eAdd reliable user input to your microcontroller projects with this 4x4 membrane keypad. Featuring 16 tactile keys arranged in a compact matrix layout, this ultra-thin, self-adhesive keypad is ideal for password entry systems, menu navigation, calculators, and access control panels. Available at The Tech Depot, Bengaluru - fast shipping, 7-day warranty on manufacturing defects, and dedicated support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003e4x4 Matrix Membrane Keypad (16 Keys)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey Labels\u003c\/td\u003e\n\u003ctd\u003e0-9, A-D, *, #\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e8-Pin Header (4 Rows + 4 Columns)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V - 5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Contact Rating\u003c\/td\u003e\n\u003ctd\u003e35V DC, 100mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 200Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 100MOhm (at 100V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Bounce\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 5ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifespan\u003c\/td\u003e\n\u003ctd\u003e1 Million+ presses per key\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-20 degreesC to +50 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eApprox. 69mm x 77mm x 0.8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003eApprox. 85mm with female pin header\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eSelf-adhesive backing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and more\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal \/ Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose This 4x4 Membrane Keypad?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e16-Key Matrix Layout:\u003c\/strong\u003e Full alphanumeric input with digits 0-9 plus A, B, C, D, *, and # for versatile data entry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Thin \u0026amp; Flexible:\u003c\/strong\u003e Less than 1mm thick membrane construction fits flush against enclosures and panels without adding bulk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Matrix Scanning:\u003c\/strong\u003e Simple 8-pin row-column interface works seamlessly with Arduino's Keypad library - no complex wiring required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Adhesive Mounting:\u003c\/strong\u003e Peel-and-stick backing allows quick, tool-free installation on any flat surface or project enclosure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Rated for over 1 million key presses with reliable tactile feedback and low contact bounce.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Works with 3.3V and 5V logic - compatible with Arduino Uno, Mega, Nano, ESP32, ESP8266, Raspberry Pi Pico, STM32, and virtually any microcontroller.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFemale Pin Header Connector:\u003c\/strong\u003e Plugs directly into breadboards or male header pins for fast prototyping without soldering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic:\u003c\/strong\u003e Sourced directly from trusted, authorized suppliers with quality verification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Shipping:\u003c\/strong\u003e 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available in Bengaluru.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Support:\u003c\/strong\u003e Full technical assistance included via email and WhatsApp around the clock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoor Lock \/ Access Control System:\u003c\/strong\u003e Build a password-protected electronic lock using the keypad with an Arduino and solenoid or servo motor for secure entry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino Calculator:\u003c\/strong\u003e Create a fully functional calculator by pairing the 4x4 keypad with a 16x2 LCD display for real-time computation and display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHome Security Alarm Panel:\u003c\/strong\u003e Design an alarm system where users arm\/disarm the security setup by entering a PIN code on the membrane keypad.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMenu Navigation Interface:\u003c\/strong\u003e Use the A-D keys for menu control and 0-9 for parameter input on LCD\/OLED-based embedded systems and industrial HMIs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDTMF Tone Generator:\u003c\/strong\u003e Generate dual-tone multi-frequency signals for telephony or remote control applications using the standard telephone-style key layout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVending Machine Controller:\u003c\/strong\u003e Implement product selection and quantity input for DIY vending or dispensing machines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStudent Learning \u0026amp; Lab Projects:\u003c\/strong\u003e Perfect for engineering coursework covering matrix scanning, GPIO multiplexing, interrupt-driven input, and embedded C programming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT Device Configuration:\u003c\/strong\u003e Allow local parameter entry (Wi-Fi credentials, thresholds, device IDs) on ESP32\/ESP8266-based IoT nodes without needing a smartphone app.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Connect (Arduino Example)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeypad Pin 1 (Row 1)\u003c\/td\u003e\n\u003ctd\u003eArduino Digital Pin 9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeypad Pin 2 (Row 2)\u003c\/td\u003e\n\u003ctd\u003eArduino Digital Pin 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy 4x4 membrane keypad Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003e4x4 membrane keypad\u003c\/strong\u003e online at \u003ca href=\"https:\/\/thetechdepot.in\"\u003eThe Tech Depot\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003e4x4 membrane keypad\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003e4x4 membrane keypad\u003c\/strong\u003e at the best price in India? The Tech Depot offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"The Tech Depot","offers":[{"title":"Default Title","offer_id":48746575069441,"sku":"TTD-18051","price":147.34,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/8090b9246d117252f0ee17356c544cb8.jpg?v=1778107906","url":"https:\/\/techdepot.in\/products\/4x4-membrane-keypad","provider":"Tech Depot India","version":"1.0","type":"link"}