Price: ₹249 - ₹150.00
(as of Nov 19, 2025 06:08:18 UTC – Details)
Product description
– The ROBODIUM HC-SR501 PIR Motion Detector Sensor Module is a compact, high-precision passive infrared (PIR) sensor designed for motion detection in automation and security systems.
– Equipped with a high-quality pyroelectric sensor and Fresnel lens dome, it accurately detects movement from people, animals, or objects within its field of view.
– The onboard signal conditioning circuitry ensures stable and reliable motion sensing performance with minimal false triggers.
– Offers adjustable detection range and delay time for flexible configuration in various applications.
– Operates over a wide input voltage range, making it suitable for both low-power and general-purpose electronic projects.
– Ideal for integration with other microcontrollers used in embedded or IoT systems.
Specifications
– Model: HC-SR501 PIR Motion Detector Sensor Module
– Operating voltage: DC 4.5V–20V
– Detection range: 3m to 7m (adjustable)
– Detection angle: Up to 140°
– Output signal: 3.3V TTL
– Delay time: Adjustable from 5s to 200s
– Quiescent current: <60µA – Operating temperature: -20°C to +80°C – Sensor type: Pyroelectric infrared (PIR) sensor – Lens type: Fresnel dome lens – Dimensions: 3.2cm × 2.4cm × 1.8cm Applications
– Motion-triggered security and alarm systems
– Automatic lighting and energy-saving control
– IoT devices requiring presence or motion detection
– Robotics and smart automation systems
– Smart home and industrial sensing projects
– Educational and embedded systems experiments
How it works
– The module senses infrared radiation changes emitted by moving objects using its pyroelectric sensor.
– When motion is detected within its 140° field of view, the sensor outputs a 3.3V TTL high signal.
– The onboard potentiometers allow manual adjustment of both detection range and output delay time.
– The sensitivity knob controls detection distance (up to 7m), while the delay control defines how long the output remains active after motion is detected.
Why buy from Robodium
– Each unit is professionally tested for reliable and accurate motion detection performance
– Built to engineering-grade standards for long-lasting operation
– Fully compatible with ESP32, and other microcontrollers
– Supported by Robodium’s detailed technical documentation and expert guidance
– Trusted quality for automation, IoT, and educational applications
Safety information
– Operate only within the specified voltage range (4.5V–20V DC).
– Avoid direct exposure of the PIR lens to heat sources or strong sunlight.
– Ensure correct wiring before applying power.
– Keep the module away from moisture and dust for accurate sensing.
– Not suitable for children under 12 years without adult supervision.
VERSATILE DETECTION: PIR motion sensor module with adjustable detection range from 3 to 7 metres and wide 140° detection angle for comprehensive coverage.
ADJUSTABLE SETTINGS: Customisable sensitivity and holding time controls allow fine-tuning of detection distance and delay duration from 5 to 200 seconds.
RELIABLE PERFORMANCE: Operating voltage range of DC 4.5V-20V with low current drain under 60µA, suitable for various electronic applications.
TEMPERATURE RESISTANT: Robust functionality across extreme temperatures from -20°C to +80°C, ensuring consistent performance in varied environments.
COMPACT DESIGN: Practical dimensions of 3.2cm x 2.4cm x 1.8cm with integrated Fresnel lens and control circuit board for efficient motion detection.