{"product_id":"hc-sr-04-ultrasonic-distance-sensor-module","title":"HC-SR-04 Ultrasonic Distance Sensor Module","description":"\u003cmeta name=\"description\" content=\"Buy HCSR04 Ultrasonic Distance Sensor Module 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\u003eHC-SR04 Ultrasonic Distance Sensor Module\u003c\/h1\u003e\n\u003cp\u003eMeasure distances accurately from 2 cm to 400 cm using ultrasonic sound waves with the HC-SR04 - the most popular and reliable non-contact distance sensor for Arduino, Raspberry Pi, and embedded projects. Available now from The Tech Depot, Bengaluru with fast shipping, 7-day warranty on manufacturing defects, and expert technical support.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eUltrasonic Ranging Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eHC-SR04\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Current\u003c\/td\u003e\n\u003ctd\u003e15 mA (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd\u003e2 cm - 400 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Angle\u003c\/td\u003e\n\u003ctd\u003e15 degrees effective cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltrasonic Frequency\u003c\/td\u003e\n\u003ctd\u003e40 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Input Signal\u003c\/td\u003e\n\u003ctd\u003e10 us TTL pulse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEcho Output Signal\u003c\/td\u003e\n\u003ctd\u003eTTL level proportional to distance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, Trig, Echo, GND (4-pin header)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard Dimensions\u003c\/td\u003e\n\u003ctd\u003e45 mm x 20 mm x 15 mm (approx.)\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 all 5V-logic microcontrollers\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\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Contact Measurement:\u003c\/strong\u003e Uses ultrasonic pulses to measure distance without physically touching the target object.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Detection Range:\u003c\/strong\u003e Accurately senses objects from 2 cm up to 4 metres away, covering most hobbyist and industrial proximity needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Precision:\u003c\/strong\u003e +\/-3 mm accuracy ensures reliable readings for robotics, automation, and instrumentation projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 4-Pin Interface:\u003c\/strong\u003e Just VCC, GND, Trigger, and Echo - easy to wire with minimal external components required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Microcontroller Compatibility:\u003c\/strong\u003e Works seamlessly with Arduino Uno\/Mega\/Nano, ESP32, ESP8266, Raspberry Pi (with voltage divider on Echo), STM32, and more.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbundant Library Support:\u003c\/strong\u003e Dozens of well-maintained Arduino and Python libraries (NewPing, HCSR04, etc.) make coding effortless.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Draws only ~15 mA at 5 V, making it suitable for battery-powered and portable applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Small PCB with dual transducer cylinders fits easily into enclosures, robot chassis, and breadboard setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe HC-SR04 operates on the time-of-flight principle. When you send a 10 us HIGH pulse to the \u003cstrong\u003eTrig\u003c\/strong\u003e pin, the module emits eight 40 kHz ultrasonic bursts from the transmitter transducer. These sound waves travel through the air, bounce off the nearest object, and return to the receiver transducer. The module then outputs a HIGH pulse on the \u003cstrong\u003eEcho\u003c\/strong\u003e pin whose duration is proportional to the round-trip travel time. Your microcontroller measures this pulse width and calculates distance using the formula:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDistance (cm) = Echo pulse width (us) \/ 58\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis entire measurement cycle completes in under 25 milliseconds, allowing rapid successive readings for real-time applications.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the HC-SR04 from The Tech Depot?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic Modules:\u003c\/strong\u003e Sourced directly from authorized distributors - no clones, no counterfeits, no inconsistent readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory-Tested Quality:\u003c\/strong\u003e Every unit is verified for correct frequency output and measurement accuracy before dispatch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast 1-5 days shipping:\u003c\/strong\u003e Ships from our Bengaluru warehouse to most Indian pin codes; same-day delivery available within Bengaluru.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpert Technical Support:\u003c\/strong\u003e Stuck on wiring or code? Our engineers provide hands-on guidance via email and WhatsApp around the clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7-day warranty on manufacturing defects:\u003c\/strong\u003e Full manufacturer warranty covers defects in materials and workmanship with hassle-free replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted by Thousands:\u003c\/strong\u003e Engineering students, makers, startups, and industrial designers across India rely on The Tech Depot for quality components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eObstacle-Avoiding Robot:\u003c\/strong\u003e Mount the HC-SR04 on a servo at the front of a wheeled robot to scan for obstacles and navigate autonomously around a room.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Parking System:\u003c\/strong\u003e Detect whether a parking spot is occupied or vacant and display real-time availability on an LCD or web dashboard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Tank Level Monitor:\u003c\/strong\u003e Point the sensor downward into a tank to measure water level and\u003c\/li\u003e\n\u003c\/ul\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 HC-SR-04 Ultrasonic Distance Sensor Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHC-SR-04 Ultrasonic Distance Sensor Module\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\u003eHC-SR-04 Ultrasonic Distance Sensor Module\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\u003eHC-SR-04 Ultrasonic Distance Sensor Module\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":48746561700097,"sku":"TTD-17847","price":79.5,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/15e33020fb13a9bccec210866756af40.jpg?v=1778107642","url":"https:\/\/techdepot.in\/products\/hc-sr-04-ultrasonic-distance-sensor-module","provider":"Tech Depot India","version":"1.0","type":"link"}