KW307 24 GHz
Human Presence Radar Module
Ultra-low-power radar module for detecting moving and stationary humans with multi-target tracking, distance/angle reporting, and adjustable detection settings.
KW307 is a compact 24 GHz human presence radar module designed for reliable people detection in smart building, office, hygiene, appliance, and automation applications. Unlike basic motion sensors, KW307 can detect both moving and stationary humans and report target location information through UART, helping product developers build smarter and more responsive sensing systems.
24 GHz Radar | Stationary Human Detection |
Up to 14 m Range | 100° Field of View |
Up to 3 Targets | UART Output | 3 mA Typical Current
Model | Detection Range |
|---|---|
| KW307 | 0–14 m |
Why Choose KW307?
Benefit 1: Detects Moving and Stationary Humans
KW307 is designed to detect both moving people and stationary humans, including subtle micro-movements.
Benefit 2 Multi-Target Tracking
The module supports tracking of up to 3 people, helping systems understand multiple human targets within the detection area.
Benefit 3 : Distance and Angle Reporting
KW307 directly reports target distance and angle information via UART, enabling more intelligent system-level decision-making.
Benefit 4 : Ultra-Low-Power Operation
With typical operation current of approximately 3 mA at 20 Hz update rate, KW307 is suitable for low-power and energy-sensitive applications.
Benefit 5 : Adjustable Detection Area
Detection range, field of view, gain, sensitivity, and hold time can be configured to support different application environments.
Benefit 5 : Strong Environmental Immunity
KW307 offers strong immunity against fan clutter, wind, and vibration, helping improve reliability in practical installation environments.
Public news:
Keywave Unveils “Spatial Intelligence” Silicon – A 24GHz Radar SoC Breakthrough News in Electronics Weekly
Technical Features
24 GHz radar operation frequency
Detects both moving and stationary humans
Multi-target tracking for up to 3 people
Maximum detection range up to 14 m
Field of view up to 100° typical
Adjustable field of view up to 120° through configuration
Distance accuracy: ±5 cm
Angle accuracy: ±3°
Typical current: 3 mA at 20 Hz update rate
UART output for target distance and angle information
Configurable application modes
Adjustable gain, room distance, FOV, motion sensitivity, stationary sensitivity, and hold time
Superior immunity to fan clutter, wind, and vibration
Applications
Smart Office and Building Automation
KW307 can support human presence detection for office occupancy, lighting control, HVAC control, space utilisation, and smart building management.
Smart Hygiene Applications
The module can be configured for hygiene-related scenarios such as smart urinals and hand dryers, enabling touchless and automated operation.
Energy-Saving Systems
By detecting both moving and stationary people, KW307 helps reduce false absence detection and supports more accurate energy-saving control.
Smart Appliances
KW307 can be integrated into appliances that need to detect user presence, approach, or activity without requiring physical contact.
Indoor Human Presence Detection
The module is suitable for rooms, desks, indoor monitoring zones, and other applications where reliable human presence sensing is required.
Outdoor / Semi-Outdoor Applications
KW307 includes configurable application modes and radar parameters to support different operating scenarios.
Designed for Flexible Product Integration
KW307 is designed to simplify radar sensing integration for product developers. The module provides direct UART output and configurable parameters, allowing engineers to tune detection behaviour according to different product environments and application requirements.
Direct UART Output
Reports multiple target distance and angle information directly to the host system.
Configurable Detection Zone
Detection range and field of view can be adjusted to match the product’s target area.
Scenario-Based Presets
Application modes help accelerate configuration for common use cases such as office, desk, urinal, hand dryer, and outdoor scenarios.
Compact Module Size
The module measures approximately 23.6 mm × 21.1 mm × 8 mm, supporting compact embedded designs.
Low-Power Radar Sensing
Typical 3 mA current consumption supports energy-efficient system design.
Human Presence Radar vs Basic Sensor
Feature | KW307 Human Presence Radar | Basic Motion Sensor |
|---|---|---|
| Detection target | Moving and stationary humans | Mainly moving objects |
| Stationary detection | Supported | Usually limited |
| Multi-target tracking | Up to 3 people | Usually not supported |
| Location information | Distance and angle output | Usually only trigger output |
| Configuration | Adjustable range, FOV, sensitivity, hold time | Usually limited |
| Output interface | UART target reporting | Basic digital output |
| Suitable applications | Smart office, hygiene, building automation, energy saving | Simple motion-triggered control |
Key Specifications
Item | Key Specification |
|---|---|
| Product | KW307 Human Presence Radar Module |
| Operating Frequency | 24.05–24.25 GHz |
| Sensor Type | 24 GHz human perception radar |
| Detection Capability | Moving and stationary human detection |
| Multi-Target Tracking | Up to 3 people |
| Maximum Detection Range | Up to 14 m |
| Field of View | 100° typical |
| Adjustable FOV | Up to 120° via configuration |
| Distance Accuracy | ±5 cm |
| Angle Accuracy | ±3° |
| Typical Current | 3 mA at 20 Hz update rate |
| Output Interface | UART |
| Supply Voltage | 5 V |
| Module Size | 23.6 mm × 21.1 mm × 8 mm |
| Operating Temperature | -25°C to 85°C |
| Recommended Installation Height | 1.5 m to 2 m |
Start Your KW307 Evaluation
Kit and Sensors are Available at DigiKey
For technical or commercial enquiries, contact:
w@keywavetech.co.uk
KW307 Module FAQ
Q: Do I need an external MCU to use the KW307 module?
A: Yes. A simple, low-cost MCU, such as a Cortex-M0 or 8051, is required to initialize the KW307 module and configure it for the target application.
Once configured, the module handles the core radar signal processing and detection algorithms internally. It outputs object location data through a standard UART interface at a configurable update rate, allowing the sensing data to be used directly in your system logic.
Q: How do I determine the optimal configuration and setup for the KW307 module?
A: We recommend starting with a KW307 evaluation module from an authorized distributor such as DigiKey, together with Keywave’s evaluation software.
The evaluation software includes a visual radar GUI and real-time target plot, allowing users to view object locations graphically. SDK parameters can be adjusted within the software so developers can immediately observe how configuration changes affect detection performance, range, sensitivity, and mapping behaviour.
Q: Can I customize the physical dimensions and field of view (FOV) of the radar module?
A: Yes. Keywave can provide custom module layouts and optimized antenna designs on an NRE (Non-Recurring Engineering) basis to meet specific footprint, field-of-view, and application requirements.
Alternatively, for customers with in-house radar antenna design expertise, Keywave can supply the radar chip and MCU combination directly, subject to MOQ requirements. Please contact our sales team to discuss technical requirements, volume expectations, and pricing.
Q: What should I do if my application is not supported by the standard SDK or demo software?
A: For specialized applications not covered by the standard release package, please contact Keywave to discuss your requirements.
We evaluate custom requests based on technical feasibility, application requirements, and market volume potential. Depending on the project, Keywave may provide access to additional firmware functions or develop tailored functionality for the application. Custom development may involve an NRE fee.
Q: What is the difference between KW307 and KW007?
A: KW007 is designed for low-power motion detection, while KW307 is designed for human presence and occupancy sensing, including stationary human detection and location reporting.
KW007 is suitable for simple motion-triggered products such as lighting, switches, appliances, and battery-powered devices. KW307 is better suited for applications that need richer spatial information, such as distance, angle, movement status, and stationary human presence.
For technical or commercial enquiries, contact:
w@keywavetech.co.uk
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Email: W@keywavetech.co.uk
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