{"product_id":"hcsr501-pir-motion-sensor","title":"HCSR501 PIR Motion Sensor","description":"\u003cmeta name=\"description\" content=\"Buy HCSR501 PIR Motion Sensor 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\u003ch1\u003eHC-SR501 PIR Motion Sensor Module\u003c\/h1\u003e\n\u003cp\u003eDetect human movement reliably with the HC-SR501 Passive Infrared (PIR) Motion Sensor - the industry-standard module for security systems, automated lighting, and IoT projects. Available at The Tech Depot, Bengaluru, with fast shipping and full 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\u003ePassive Infrared (PIR) - Pyroelectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003eUp to 7 meters (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Angle\u003c\/td\u003e\n\u003ctd\u003eLess than 120 degrees cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e4.5V - 20V DC (typically 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V (HIGH when motion detected, LOW otherwise)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuiescent Current\u003c\/td\u003e\n\u003ctd\u003eLess than 50uA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrigger Modes\u003c\/td\u003e\n\u003ctd\u003eSingle Trigger (L) \/ Repeatable Trigger (H) - jumper selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelay Time\u003c\/td\u003e\n\u003ctd\u003e0.3s - 200s (adjustable via potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003eAdjustable via potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlock Time\u003c\/td\u003e\n\u003ctd\u003e2.5s default (LOW period after output resets)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCB Dimensions\u003c\/td\u003e\n\u003ctd\u003e32mm x 24mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Diameter\u003c\/td\u003e\n\u003ctd\u003e23mm (Fresnel lens dome)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-15 degreesC to +70 degreesC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e3-pin header (VCC, OUT, GND)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, Raspberry Pi, ESP8266, ESP32, STM32, PIC, and all 3.3V\/5V 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\u003eAdjustable Sensitivity:\u003c\/strong\u003e Fine-tune detection range from ~3m to ~7m using the onboard potentiometer to eliminate false triggers or extend coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Delay Time:\u003c\/strong\u003e Set the output HIGH duration from 0.3 seconds to over 3 minutes - ideal for controlling lights, alarms, or relay timers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Trigger Modes:\u003c\/strong\u003e Jumper-selectable single trigger (output goes LOW after delay, regardless of continued motion) or repeatable trigger (output stays HIGH as long as motion continues).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Tolerance:\u003c\/strong\u003e Operates from 4.5V to 20V DC, making it compatible with USB power, battery packs, 9V batteries, and 12V adapters without additional regulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V Digital Output:\u003c\/strong\u003e Direct logic-level output connects to any microcontroller's GPIO pin - no analog-to-digital conversion or level shifting needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Consumption:\u003c\/strong\u003e Draws less than 50uA in standby, making it perfect for battery-powered and solar-powered installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFresnel Lens Dome:\u003c\/strong\u003e The white dome lens focuses infrared radiation from multiple angles onto the dual-element pyroelectric sensor, maximizing the detection cone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBISS0001 Controller IC:\u003c\/strong\u003e Industry-proven signal processing chip handles amplification, filtering, and comparator logic on-chip for clean, debounced digital output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe HC-SR501 uses a dual-element pyroelectric sensor beneath a Fresnel lens. All objects above absolute zero emit infrared radiation proportional to their temperature. When a warm body (such as a human or animal) moves across the sensor's field of view, the two pyroelectric elements detect a differential change in infrared energy. The BISS0001 IC amplifies this differential signal, filters out noise, and outputs a clean HIGH (3.3V) pulse on the OUT pin. When no motion is detected, the output returns to LOW (0V) after the adjustable delay period.\u003c\/p\u003e\n\n\u003ch2\u003eOnboard Controls Explained\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitivity Potentiometer (Sx):\u003c\/strong\u003e Rotate clockwise to increase detection range (up to ~7m), counterclockwise to decrease (~3m). Start at midpoint and adjust based on your environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime-Delay Potentiometer (Tx):\u003c\/strong\u003e Rotate clockwise to increase the output HIGH duration (up to ~200s), counterclockwise to decrease (~0.3s). This controls how long the output stays HIGH after motion is detected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrigger Mode Jumper (H\/L):\u003c\/strong\u003e Position H (Repeatable Trigger) - the delay timer resets with each new motion event, keeping the output HIGH continuously during activity. Position L (Single Trigger) - the output goes HIGH once, stays HIGH for the delay period, then goes LOW regardless of continued motion, with a 2.5s block time before it can re-trigger.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePin Configuration\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin 1\u003c\/td\u003e\n\u003ctd\u003eVCC - Power supply input (4.5V-20V DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin 2\u003c\/td\u003e\n\u003ctd\u003eOUT - Digital output signal (\u003c\/td\u003e\n\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 HCSR501 PIR Motion Sensor Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eHCSR501 PIR Motion Sensor\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\u003eHCSR501 PIR Motion Sensor\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\u003eHCSR501 PIR Motion Sensor\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":48746576609537,"sku":"TTD-18077","price":82.68,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/233805dcbcf5568b25950912d5cad09e.jpg?v=1778107941","url":"https:\/\/techdepot.in\/products\/hcsr501-pir-motion-sensor","provider":"Tech Depot India","version":"1.0","type":"link"}