RCWL-0516 Microwave Radar Motion Sensor Module Doppler Radar Human Body Induction Detector Wide Voltage 4-28V Smart Induction Switch

RCWL-0516 Module Product Overview

The RCWL-0516 module is a microwave induction module based on Doppler radar technology, specifically designed for detecting moving objects. Built around the dedicated signal processing control chip RCWL-9196, the RCWL-0516 module offers superior penetrating detection capabilities compared to traditional passive infrared (PIR) sensors, capable of detecting movement through non-metallic barriers such as plastic enclosures, wood, thin walls, and glass. The RCWL-0516 module supports an ultra-wide operating voltage of 4-28V with an operating current of only 2.8-3mA and a detection range of 5-15 meters (depending on version). With a wide induction angle and high reliability, the RCWL-0516 module is widely used in human body induction lighting, burglar alarms, smart home automation, and industrial automation.

RCWL-0516 Module Key Features

The RCWL-0516 module uses Doppler Radar Technology: Utilizes 2.7G microwave signals for detection, based on the Doppler radar principle specifically for moving object detection.

The RCWL-0516 module features a Dedicated Control Chip: Built around the RCWL-9196 dedicated signal processing control chip for high integration and stable performance.

The RCWL-0516 module provides an Ultra-Wide Operating Voltage: Supports DC 4-28V wide voltage input, compatible with 5V, 12V, 24V and other power systems.

The RCWL-0516 module delivers Ultra-Low Power Consumption: Typical operating current of 2.8mA, maximum 3mA, ideal for battery-powered applications.

The RCWL-0516 module offers a Long Detection Range: Detection range of 5-15 meters (Standard: 5-7m, 2022 version: 6-12m, Plus version: 10-15m) with wide induction angle.

The RCWL-0516 module excels in Penetrating Detection Capability: Compared to traditional PIR sensors, the RCWL-0516 module offers superior penetrating detection through non-metallic materials such as plastic, wood, and glass.

The RCWL-0516 module supports Repeatable Trigger Mode: Supports repeatable triggering – OUT pin outputs high level (3.3V) when motion is detected, with trigger duration of approximately 2-3 seconds.

The RCWL-0516 module provides a 3.3V Power Output: Module can output 3.3V/100mA power for external low-power devices.

The RCWL-0516 module includes Adjustable Parameters: Detection distance and repeat trigger time can be adjusted via external resistors and capacitors.

The RCWL-0516 module works over a Wide Operating Temperature: Supports -20℃ to +80℃ for harsh environments.

The RCWL-0516 module has a Compact Size: Module dimensions approximately 35.9×15mm, suitable for integration into various devices.

RCWL-0516 Module Version Comparison

RCWL-0516 Module Applications

The RCWL-0516 module is widely used in human body induction lighting: the RCWL-0516 module enables automatic lighting for stairways, corridors, courtyards; burglar alarm systems: the RCWL-0516 module provides intrusion detection, security monitoring, door/window sensors; smart home: the RCWL-0516 module is used for automation control, smart switches, presence detection; industrial automation: the RCWL-0516 module handles production line object detection, equipment auto-start/stop; vehicle sensing: the RCWL-0516 module supports parking lot vehicle detection, traffic monitoring; and various DIY electronics and Arduino/ESP8266 projects with the RCWL-0516 module.

RCWL-0516 Module Advantages and Highlights

The RCWL-0516 module offers significant advantages over traditional PIR sensors: The RCWL-0516 module uses microwave Doppler radar technology that is unaffected by ambient temperature, maintaining reliable operation in high-temperature outdoor environments where PIR sensors often fail. The RCWL-0516 module's penetrating detection capability is its core advantage, allowing detection through non-metallic materials like plastic enclosures, wood, thin walls, and glass for concealed installation. The RCWL-0516 module's ultra-wide 4-28V voltage compatibility with 5V, 12V, 24V systems eliminates the need for level shifting. The RCWL-0516 module's ultra-low 2.8mA power consumption suits battery-powered wireless sensing applications. The RCWL-0516 module provides flexible detection range options: Standard 5-7m, 2022 version 6-12m, Plus version 10-15m for different scenarios. The RCWL-0516 module's wide induction angle provides extensive coverage. The RCWL-0516 module's repeatable trigger mode maintains high output during continuous detection. The RCWL-0516 module's 3.3V/100mA output powers external devices. The RCWL-0516 module's CDS pin supports photoresistor connection for automatic day/night mode switching. The RCWL-0516 module's adjustable detection distance and trigger time via external resistors and capacitors. The RCWL-0516 module's compact size enables easy integration, high penetration allows the RCWL-0516 module to be installed inside enclosures.

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FAQ

1. What is the RCWL-0516 Microwave Sensor Module?

The RCWL-0516 module is a microwave motion sensor module based on Doppler radar technology, designed to detect moving objects (such as humans). Compared to traditional PIR sensors, the RCWL-0516 module is unaffected by ambient light and can penetrate non-metallic obstacles.

2. What are the key specifications of this module?

Operating Voltage: 4.0V ~ 28.0V

Operating Current: Approximately 2.8 ~ 3mA

Detection Range: Typically 5-7 meters, with upgraded versions reaching 10-15 meters

Transmit Power: 20 ~ 30mW

Operating Frequency: 2.7GHz

Output Level: HIGH (3.3V) when motion is detected, LOW (0V) when idle

Operating Temperature: -20℃ ~ 80℃

3. What versions of the module are available?

Three main versions of the RCWL-0516 module with different detection ranges:

Original (RCWL-0516) : 5-8 meters

2022 Model: 6-12 meters

Upgraded (RCWL-0516+) : 10-15 meters

4. What is the pinout of the module?

The RCWL-0516 module has 5 pins:

3V3: 3.3V regulated output, max 100mA drive current

GND: Ground

OUT: Signal output. Goes HIGH (3.3V) when motion is detected, LOW (0V) when idle

VIN: Power input, supports 4-28V DC

CDS: Enable control. When this pin is pulled below 0.7V, OUT is forced LOW — can be used with a photoresistor for day/night mode switching

5. Can the detection range and trigger time be adjusted?

Yes, the RCWL-0516 module can be adjusted via onboard solder pads:

R-GN (Range Adjustment) : Soldering a resistor reduces detection distance. Default is ~7m; with a 1MΩ resistor, distance reduces to ~5m

C-TM (Trigger Time Adjustment) : Changing the capacitor value adjusts the repeat trigger duration — larger capacitance = longer trigger hold time

6. What applications is this module suitable for?

The RCWL-0516 module is commonly used in:

Human presence detection lighting (stairwells, garages, etc.)

Burglar alarm systems

Smart home automation

Pet or animal movement detection

Replacement for PIR sensors

7. How does RCWL-0516 differ from a PIR sensor?

Penetration: The RCWL-0516 module can penetrate non-metallic obstacles (plastic enclosures, thin walls); PIR cannot

Environmental: The RCWL-0516 module is unaffected by ambient light; PIR is temperature-sensitive

Mounting: The RCWL-0516 module is bi-directional (front side with components is the primary sensing side)

Power consumption: PIR is generally lower power

8. What are the installation precautions?

Orientation: For the RCWL-0516 module, the component side is the primary sensing face; the reverse side has reduced sensitivity

Avoid Obstructions: No metal遮挡 in front of the sensing face of the RCWL-0516 module

Clearance: Leave at least 1cm of space in front of and behind the RCWL-0516 module's sensing face

Mounting: Keep the RCWL-0516 module parallel to the mounting surface

Spacing: Maintain >1m spacing between multiple RCWL-0516 modules to avoid interference

9. Can the module detect through walls?

The RCWL-0516 module can penetrate non-metallic obstacles (drywall, plastic, glass, etc.). Metal obstacles (wire mesh, metal cabinets) will shield microwave signals and reduce the RCWL-0516 module's effectiveness.

10. What are common issues when using this module?

False triggers: The RCWL-0516 module may be triggered by air movement (curtains, fans), pets, or HVAC systems

Power requirements: Some users report reduced sensitivity at low voltages (e.g., 5V); 12V or higher is recommended for best performance with the RCWL-0516 module

Interference: Multiple RCWL-0516 modules operating in the same area may interfere with each other

CDS pin: Proper R-CDS resistor configuration is required if using a photoresistor for day/night control with the RCWL-0516 module