HC-SR505 Mini PIR (Passive Infrared) Motion Sensor
HC-SR505 Mini PIR (Passive Infrared) Motion Sensor
HC-SR505 Mini PIR (Passive Infrared) Motion Sensor
Detect human motion effortlessly with the HC-SR505 Mini PIR Sensor - a compact, low-power passive infrared module ideal for automatic lighting, security systems, and IoT projects. Available at The Tech Depot, Bengaluru with fast shipping, 7-day warranty on manufacturing defects, and expert support.
Specifications
| Module | HC-SR505 Mini PIR Motion Sensor |
| Sensor Type | Passive Infrared (PIR) - Pyroelectric |
| Operating Voltage | 4.5V - 20V DC |
| Quiescent Current | < 60uA (ultra-low power) |
| Output Signal | Digital (HIGH 3.3V when motion detected, LOW when idle) |
| Detection Range | Up to 3 meters |
| Detection Angle | Approximately 100 degrees cone |
| Output Delay Time | ~8 seconds (fixed, non-retriggerable) |
| Trigger Mode | Non-repeatable (single trigger - output goes LOW after delay, then re-arms) |
| Board Dimensions | ~10mm x 23mm (ultra-compact) |
| Operating Temperature | -20 degreesC to +80 degreesC |
| Output Drive | Can directly drive small loads or interface with microcontroller GPIO |
| Logic Compatibility | 3.3V / 5V microcontrollers (Arduino, ESP32, ESP8266, Raspberry Pi, STM32) |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- Ultra-Compact Form Factor: At just 10mm x 23mm, the HC-SR505 is significantly smaller than the popular HC-SR501, making it perfect for space-constrained designs and wearable projects.
- Ultra-Low Power Consumption: Draws less than 60uA in standby, making it ideal for battery-powered and solar-powered applications where every microamp counts.
- Wide Voltage Range: Operates from 4.5V to 20V DC, providing flexibility to power directly from Arduino 5V pins, 9V batteries, 12V adapters, or other common supplies.
- Simple Digital Output: Provides a clean HIGH/LOW signal - no analog-to-digital conversion or complex signal processing needed. Connect directly to any microcontroller GPIO pin.
- 3-Meter Detection Range: Reliably detects human body infrared radiation within a 3-meter radius across a ~100 degrees field of view.
- Fixed 8-Second Delay: After detecting motion, output stays HIGH for approximately 8 seconds, then automatically returns to LOW and re-arms - no external timing components required.
- Non-Retriggerable Design: The single-trigger mode ensures predictable, debounced behavior without continuous re-triggering during sustained motion.
- No Adjustments Needed: Unlike the HC-SR501, there are no potentiometers to adjust - the sensor works reliably right out of the box with fixed sensitivity and delay.
- Wide Temperature Range: Functions from -20 degreesC to +80 degreesC, suitable for both indoor and sheltered outdoor installations.
- 3-Pin Interface: Simple VCC, GND, and OUT pinout for quick breadboard prototyping or PCB integration.
HC-SR505 vs HC-SR501 - Quick Comparison
| Feature | HC-SR505 | HC-SR501 |
| Size | ~10 x 23mm (mini) | ~32 x 24mm (standard) |
| Detection Range | Up to 3m | Up to 7m (adjustable) |
| Delay Time | ~8 seconds (fixed) | 3s - 300s (adjustable) |
| Sensitivity | Fixed | Adjustable via potentiometer |
| Trigger Mode | Non-retriggerable only | Retriggerable & non-retriggerable |
| Standby Current | < 60uA | < 65uA |
| Best For | Compact, simple, low-power builds | Adjustable, long-range detection |
How It Works
The HC-SR505 contains a pyroelectric sensor element behind a small Fresnel lens dome. All warm-blooded beings (humans, animals) emit infrared radiation. When a person moves within the sensor's field of view, the changing IR pattern causes the pyroelectric element to generate a small voltage change. The onboard BISS0001 signal processing IC amplifies this signal
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy HC-SR505 Mini PIR (Passive Infrared) Motion Sensor Online in India
Purchase the HC-SR505 Mini PIR (Passive Infrared) Motion Sensor online at The Tech Depot - 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 HC-SR505 Mini PIR (Passive Infrared) Motion Sensor 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.
Looking to buy HC-SR505 Mini PIR (Passive Infrared) Motion Sensor 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.