SKU: SENS-2504
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RCWL-0516 Microwave Radar Motion Sensor Module

₹27.00 (Inclusive of all taxes)
Out of Stock

The RCWL-0516 Microwave Radar Motion Sensor Module is a Doppler radar-based motion detector offering a 1-2 meter range, compatible with 3.3V microcontrollers like Arduino, ESP32, and Raspberry Pi for security and automation projects.

Features

  • Microwave Doppler Radar detection principle for reliable motion sensing.
  • Wide operating voltage range from 4V to 28V DC.
  • Provides a 3.3V TTL-level output signal upon motion detection.
  • Compact footprint measuring 36mm x 17mm.
  • Includes a regulated 3.3V output (100mA max) to power external logic.

Out of stock

Description

The RCWL-0516 utilizes a microwave Doppler radar technique, emitting a low-power 5.8GHz signal to detect movement within its 1-2 meter range. This method offers advantages over traditional PIR sensors, including the ability to detect motion through certain non-metallic materials and less susceptibility to ambient temperature changes.

The module features an integrated RCWL-9196 signal processing chip, which handles the complex radar signal analysis and provides a clean, TTL-compatible output. It delivers a 3.3V HIGH signal for 2-3 seconds upon detecting motion before returning to a LOW state. Its robust 4-28V input range makes it suitable for a variety of power supplies, from battery packs to regulated wall adapters.

Key Features

  • Doppler radar-based motion detection for consistent performance.
  • Broad 4V to 28V DC input voltage compatibility.
  • Integrated 3.3V LDO regulator provides a stable logic supply.
  • Compact and lightweight PCB design for easy integration.
  • Repeat trigger mode for continuous motion monitoring.
  • Operates across a wide temperature range from -25°C to 85°C.
  • Low quiescent current consumption of approximately 3mA.

Applications

  • Burglar alarm and security light activation systems.
  • Touchless automatic faucet, soap dispenser, or hand dryer control.
  • Energy-saving lighting control in corridors, stairwells, and storage rooms.
  • Presence detection for smart home automation (e.g., turning on fans or audio).
  • Basic obstacle detection for small robotics and interactive displays.

Technical Specifications

Model NumberRCWL-0516
Detection PrincipleMicrowave Doppler Radar
Detection Range1 - 2 meters
Operating Voltage4 - 28 V DC
Quiescent Current~3 mA
Output Signal3.3V TTL (HIGH on detection)
Output Duration2 - 3 seconds
RF Frequency5.8 GHz
Transmit Power20 mW (typ), 30 mW (max)
Regulated Output3.3V @ 100 mA max
Operating Temperature-25°C to +85°C
Dimensions (L x W)36 mm x 17 mm
Weight~3 g

Frequently Asked Questions

What is the operating voltage range for the RCWL-0516 module?

The RCWL-0516 module accepts a wide DC input voltage range from 4V to 28V. It contains an onboard regulator that provides a stable 3.3V supply for its internal circuitry and a 100mA output pin to power external components like microcontrollers.

What type of output signal does it provide when motion is detected?

Upon detecting motion, the module's OUT pin switches from a LOW (0V) state to a HIGH (3.3V) TTL-level signal. This output remains high for a duration of approximately 2 to 3 seconds before automatically resetting to LOW, making it directly compatible with 3.3V logic microcontrollers like ESP32 or Raspberry Pi.

How does the microwave Doppler detection differ from a standard PIR sensor?

Unlike PIR sensors which detect changes in infrared heat radiation, the RCWL-0516 uses a 5.8GHz microwave signal. It analyzes the frequency shift (Doppler effect) of the reflected signal to detect movement. This allows it to sense motion through thin non-metallic materials and is less affected by ambient temperature fluctuations.

Can the detection range or sensitivity be adjusted on this module?

The standard RCWL-0516 module has a fixed detection range of approximately 1 to 2 meters. Sensitivity is not user-adjustable via a potentiometer. The range can be influenced by the mounting environment; placing metal objects directly in front of the antenna or insufficient clearance around the board can reduce performance.

Package Includes

  • 1 x RCWL-0516 Microwave Radar Sensor Module

Additional Information

Weight 0.003 kg
Dimensions 3.6 × 1.7 cm