HCSR501 PIR Motion Sensor (Passive Infrared Sensor)
HCSR501 PIR Motion Sensor (Passive Infrared Sensor)
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Looking to buy HCSR501 PIR Motion Sensor (Passive Infrared Sensor) at the best price in India? Tech Depot India 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.
Specifications
| Sensor Type | Passive Infrared (PIR) Motion Detector |
| Model | HC-SR501 |
| Operating Voltage | 4.5V - 20V DC (typically 5V) |
| Output Voltage | 3.3V (HIGH) / 0V (LOW) - TTL compatible |
| Detection Range | Up to 7 meters (adjustable via potentiometer) |
| Detection Angle | Approximately 120 degrees cone |
| Delay Time | 0.3 seconds - 5 minutes (adjustable via potentiometer) |
| Trigger Modes | Single Trigger (L) / Repeatable Trigger (H) - jumper selectable |
| Quiescent Current | < 50 uA |
| Output Current | Up to 10 mA (sink/source) |
| Sensing Element | Dual-element pyroelectric infrared sensor |
| Fresnel Lens | White dome lens for wide-angle IR focusing |
| PCB Dimensions | 32mm x 24mm (approx.) |
| Operating Temperature | -15 degreesC to +70 degreesC |
| Warm-Up Time | ~60 seconds after power-on for stabilization |
| Interface | 3-pin header (VCC, OUT, GND) |
| Compatibility | Arduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and all 3.3V/5V microcontrollers |
| Origin | Original/Authentic Module |
Why Choose HCSR501 PIR Motion Sensor (Passive Infrared Sensor)?
100% Authentic
GST Invoice - A GST invoice is included with every order.
Expert Support - Dedicated technical help on WhatsApp and email.
Pan-India Delivery - Shipped across Bengaluru, Delhi NCR, Hyderabad and all of India.
Trusted by Makers - Used by students, hobbyists and professionals nationwide.
Key Features of HCSR501 PIR Motion Sensor (Passive Infrared Sensor)
- Passive Infrared Detection: Senses body heat (infrared radiation) emitted by humans and animals - no active signal emission, completely safe and invisible
- Adjustable Sensitivity: Onboard potentiometer lets you fine-tune detection range from ~3m to ~7m to suit your environment
- Adjustable Delay Time: Second potentiometer controls how long the output stays HIGH after detection (0.3s to 5 minutes)
- Dual Trigger Modes: Jumper selects between single trigger (output goes LOW after delay, then re-arms) or repeatable trigger (output stays HIGH as long as motion continues)
- Ultra-Low Power Consumption: Draws less than 50uA in standby - ideal for battery-powered and always-on applications
- Wide Voltage Range: Operates from 4.5V to 20V, making it flexible for various power supply scenarios
- 3.3V Digital Output: Clean TTL-level output directly readable by Arduino, ESP32, Raspberry Pi, and other microcontrollers without level shifting
- Fresnel Lens Included: White dome lens focuses infrared energy onto the pyroelectric sensor for maximum sensitivity and wide coverage
- BISS0001 Controller IC: Onboard signal processing chip handles amplification, filtering, and timing - delivers clean, debounced digital output
- Compact Form Factor: Small PCB with standard 3-pin header for easy breadboard and project integration
HC-SR501 PIR Motion Sensor (Passive Infrared Sensor)
Detect human movement reliably with the HC-SR501 PIR Motion Sensor - the industry-standard passive infrared sensor module used in security systems, automatic lighting, and IoT projects. Available at Tech Depot India, Bengaluru with fast shipping and full technical support.
How the HC-SR501 Works
The HC-SR501 uses a dual-element pyroelectric sensor beneath a Fresnel lens dome. All objects with temperature above absolute zero emit infrared radiation. When a warm body (like a person) moves across the sensor's field of view, the two pyroelectric elements detect a differential change in infrared energy. The onboard BISS0001 IC amplifies this signal, filters out noise, and outputs a clean digital HIGH (3.3V) pulse on the OUT pin. When no motion is detected, the output returns to LOW (0V) after the adjustable delay period.
Onboard Adjustments
- Sensitivity Potentiometer (left): Rotate clockwise to increase detection distance (up to ~7m), counter-clockwise to decrease (~3m)
- Time Delay Potentiometer (right): Rotate clockwise to increase output hold time (up to ~5 min), counter-clockwise to decrease (~0.3s)
- Trigger Mode Jumper: Set to H position for repeatable trigger (recommended for most applications) or L position for single trigger
Pin Configuration
| Pin | Label |
Frequently Asked Questions
Is technical support available?
Yes, responsive support via email and WhatsApp for setup, troubleshooting, and application guidance.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Customer Support
Email: techdepotindia@gmail.com
WhatsApp: Available for setup and troubleshooting help
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