5.8GHz Microwave Motion Sensor - Human Presence Detection
Human Presence Microwave Motion Sensor 5.8 GHz
This sensor uses 5.8 GHz millimeter-wave radar to detect stationary and moving human presence, unlike basic PIR sensors that only detect motion. It reports distance, motion, and static presence data via UART, making it perfect for intelligent automation in homes, offices, and industrial settings.
Key Specifications
| Specification | Value |
|---|---|
| Operating Frequency | 5.8 GHz |
| Detection Range | 0.75 m to 5 m (adjustable) |
| Supply Voltage | 5 V DC |
| Output Type | UART (TX/RX), digital presence pin |
| Detection Angle | Approximately 100° conical |
| Dimensions | 24 x 24 mm PCB module |
What You Can Build With This
- Occupancy-based smart lighting that stays on as long as a person is in the room, even if motionless.
- Energy-saving automation to turn off fans, ACs, or monitors when a desk is vacated.
- A security system that triggers an alert or camera when an intruder is present.
- People counting and room occupancy dashboard for offices or shops using serial data.
Compatibility
Works with any microcontroller that supports 5V logic level UART, such as Arduino Uno, ESP32, or Raspberry Pi Pico. For 3.3V boards like Raspberry Pi GPIO UART, use a level shifter or voltage divider on the sensor’s TX line. Common pairings include ESP32 for Wi-Fi integration and Arduino for rapid prototyping.
Wiring Notes
Connect VCC to 5V and GND to ground. Connect the sensor’s TX pin to the microcontroller’s RX pin and RX to TX. The digital presence output goes high when human presence is detected; use a 10kΩ pull-up if needed. Ensure the sensor is mounted with its antenna side unobstructed and away from metal.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Raspberry Pi 4?
Yes, but the Raspberry Pi’s GPIO UART operates at 3.3V while the sensor outputs 5V. Use a logic-level converter or a simple resistor divider on the sensor’s TX line to avoid damage.
Can it detect a person sitting completely still?
Yes, this sensor emits and analyses reflected microwave signals, so it can detect stationary human presence by sensing micro-movements like breathing. It provides separate ‘moving’ and ‘static’ status outputs.
What is the maximum detection distance?
The sensor can detect presence up to 5 meters, but the firmware allows restricting zones via serial commands. The effective range depends on mounting height and environment.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items