{"product_id":"hc-sr04-ultrasonic-distance-sensor-module-2cm-400cm","title":"HC-SR04 Ultrasonic Distance Sensor Module 2cm–400cm","description":"\u003cp\u003eThe HC-SR04 Ultrasonic Sensor is a reliable distance measurement module that uses sonar technology to detect objects from 2cm to 400cm. Operating at 5V DC with up to 3mm accuracy, it is ideal for Arduino, robotics, automation, and obstacle detection projects.\u003c\/p\u003e\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eHC-SR04 Ultrasonic Distance Sensor Module\u003c\/strong\u003e is one of the most popular distance-measuring sensors used in Arduino, ESP32, Raspberry Pi, robotics, and automation projects. Using ultrasonic sonar technology, the sensor emits high-frequency sound waves and measures the time taken for the echo to return after hitting an object.\u003c\/p\u003e\n\u003cp\u003eWith a measurement range of \u003cstrong\u003e2cm to 400cm\u003c\/strong\u003e and an accuracy of approximately \u003cstrong\u003e3mm\u003c\/strong\u003e, the HC-SR04 provides reliable and precise distance sensing for a wide range of applications.\u003c\/p\u003e\n\u003cp\u003eThe module features simple Trigger and Echo interfaces, making integration straightforward with popular microcontrollers and development boards. Its compact design and low cost make it a favorite choice for students, hobbyists, makers, and engineers.\u003c\/p\u003e\n\u003cp\u003eWhether you're building obstacle-avoiding robots, smart parking systems, liquid level monitors, or automation projects, the HC-SR04 delivers dependable performance and easy implementation.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eArduino projects\u003c\/li\u003e\n\u003cli\u003eESP32 projects\u003c\/li\u003e\n\u003cli\u003eRaspberry Pi systems\u003c\/li\u003e\n\u003cli\u003eObstacle avoidance robots\u003c\/li\u003e\n\u003cli\u003eDistance measurement systems\u003c\/li\u003e\n\u003cli\u003eSmart parking systems\u003c\/li\u003e\n\u003cli\u003eLiquid level monitoring\u003c\/li\u003e\n\u003cli\u003eIndustrial automation prototypes\u003c\/li\u003e\n\u003cli\u003eEducational STEM projects\u003c\/li\u003e\n\u003cli\u003eSmart home automation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate ultrasonic distance measurement\u003c\/li\u003e\n\u003cli\u003eWide sensing range from 2cm to 400cm\u003c\/li\u003e\n\u003cli\u003eHigh accuracy up to 3mm\u003c\/li\u003e\n\u003cli\u003eSimple Trigger and Echo interface\u003c\/li\u003e\n\u003cli\u003eEasy integration with Arduino and ESP32\u003c\/li\u003e\n\u003cli\u003eReliable non-contact measurement\u003c\/li\u003e\n\u003cli\u003eLow power operation\u003c\/li\u003e\n\u003cli\u003eIdeal for robotics and automation projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\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\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eUltrasonic Distance Sensor\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\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e2cm – 400cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd\u003e3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTechnology\u003c\/td\u003e\n\u003ctd\u003eUltrasonic Sonar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, Trig, Echo, GND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Pins\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Color\u003c\/td\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Holes\u003c\/td\u003e\n\u003ctd\u003eAvailable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThe HC-SR04 measures distance using ultrasonic sound waves. When a short pulse is applied to the Trig pin, the sensor emits an ultrasonic burst. The sound wave travels through the air, reflects from an object, and returns to the sensor. The Echo pin outputs a pulse whose duration corresponds to the time taken for the sound wave to travel to the object and back. A microcontroller such as Arduino or ESP32 calculates the distance based on this time measurement. This non-contact measurement method makes the sensor ideal for robotics, obstacle detection, and automation applications.\u003c\/p\u003e","brand":"Chip.pk","offers":[{"title":"Default Title","offer_id":51916844597533,"sku":null,"price":190.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/1060\/7389\/files\/ChatGPTImageJun22_2026_07_14_27PM.png?v=1782137680","url":"https:\/\/www.chip.pk\/products\/hc-sr04-ultrasonic-distance-sensor-module-2cm-400cm","provider":"Chip.pk","version":"1.0","type":"link"}