5.8GHz Human Presence Radar Sensor Floating Frequency Module

5.8GHz Human Presence Radar Sensor – Floating Frequency Module

Upgrade your smart home, automation, or electronics projects with this compact 5.8GHz Human Presence Radar Sensor Floating Frequency Module. Using microwave Doppler radar technology, this module reliably detects human presence and movement through walls, glass, and thin partitions — no line-of-sight required. Its floating frequency design reduces interference and improves detection stability, making it an excellent choice for lighting control, security systems, smart switches, and IoT applications.

Key Features

• 5.8GHz Microwave Radar Technology: Detects human presence and motion with high accuracy, even through non-metallic barriers.
• Floating Frequency Design: Minimizes signal interference and cross-talk for more stable, consistent detection.
• Wide Supply Voltage Range: Operates on 3.7V–18V, making it compatible with a broad range of power sources and microcontrollers.
• Compact SMD Package: Small footprint for easy integration into PCB designs and embedded electronics projects.
• Wide Operating Temperature: Functions reliably from 0°C to 80°C, suitable for both indoor and light industrial environments.
• Customizable: Supports custom configurations to suit specific project requirements.
• New Condition: Each module ships brand new, individually packaged.

Specifications

Typical Applications

• Automatic lighting control systems
• Smart home presence detection
• Security and alarm systems
• IoT and microcontroller projects (Arduino, Raspberry Pi, ESP32)
• Energy-saving smart switches
• Office and commercial building automation

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Frequently Asked Questions

Q: What is a 5.8GHz floating frequency radar sensor module and how does it work?

A: This module uses 5.8GHz microwave Doppler radar to detect the presence and motion of a person within its detection range. The "floating frequency" feature means the module shifts its transmission frequency slightly to avoid interference from nearby devices, improving detection reliability. It outputs a signal when presence is detected, which can be read by a microcontroller or used to trigger a relay or switch.

Q: What voltage and power supply does this radar sensor module require?

A: The module supports a wide supply voltage range of 3.7V to 18V, making it compatible with common batteries, USB power banks, 5V microcontroller boards (Arduino, ESP32, Raspberry Pi), and standard DC power adapters.

Q: Can this module detect presence through walls or obstacles?

A: Yes. 5.8GHz microwave radar can penetrate non-metallic materials such as drywall, wood, glass, and thin plastic partitions. This makes it ideal for installations where the sensor cannot be in direct line-of-sight with the area being monitored.

Q: What projects is this radar sensor module best suited for?

A: This module is ideal for smart home automation (automatic lights, HVAC control), security and alarm systems, occupancy detection, energy management systems, and any embedded electronics or IoT project requiring reliable human presence detection.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.