5.8GHz Microwave Radar Module
We have ✅ 3 available of the DF-SEN0521 in our Sydney warehouse. An extra 192 units available with a short lead time.
The 5.8GHz Microwave Radar Module is a high-sensitivity motion detection sensor that transmits and receives 5.8GHz electromagnetic waves. By analysing the difference between transmitted and reflected signals, it reliably detects movement within its detection zone.
Unlike traditional PIR sensors that only respond to large body movements, this FMCW/CW microwave radar can detect subtle motion such as breathing, making it capable of true human presence detection — even when a person is sitting still or sleeping. Results are output via UART serial or digital I/O level.
Key Features
- Human Presence Detection – Detects micro-movements like breathing, not just walking
- Dual Modulation – Supports both FMCW and CW radar modes
- Wide Beam Angle – 120° × 120° detection cone covers large areas
- Long Range – Up to 11m detection distance
- Dual Output – UART serial (115200 baud) and digital I/O level output
- Compact Design – Just 20 × 18mm, easy to integrate into enclosures and projects
- Wide Temperature Range – Operates from −40°C to +85°C
Specifications
- Operating Frequency: 5.8GHz
- Modulation Mode: FMCW, CW
- Operating Voltage: 4.5–5.5V
- Operating Current: 22mA
- Detection Distance: 11m
- Equivalent Transmission Power: 3–5dBm
- Beam Angle: 120° × 120°
- Baud Rate: 115200
- Operating Temperature: −40°C to +85°C
- Dimensions: 20 × 18mm
Ideal For
- Smart lighting and occupancy-based automation
- Security and intrusion detection systems
- Home appliance presence sensing
- Hotel and building room occupancy monitoring
- Garage and parking detection
Package Contents
- 1× 5.8GHz Microwave Radar Module
Resources
The 5.8GHz Microwave Radar Module appears in the following collections:
