24GHz CDM324 Microwave Radar Sensor Module – Body Induction Switch
24GHz CDM324 Microwave Radar Sensor Module – Body Induction Switch
24GHz CDM324 Microwave Radar Sensor Module
The CDM324 24GHz Microwave Radar Sensor Module is a compact, high-performance body induction switch designed for a wide range of smart automation applications. Operating at a stable 24–24.25 GHz frequency, this module accurately detects motion and presence using microwave technology — no direct line-of-sight required. Whether you're building an intelligent lighting system, an automatic door trigger, or a security detection setup, the CDM324 delivers reliable, low-power performance in a small form factor.
Made in Mainland China.
Key Features
- Working Frequency: 24–24.25 GHz — stable, interference-resistant microwave detection
- Output Power: +14 dBm for consistent, wide-area sensing
- Antenna Beam Width: 80% / 32° — focused yet broad detection cone
- Low Power Consumption: +5V / 29mA — energy-efficient operation ideal for always-on applications
- CE Certified — meets European safety and electromagnetic compatibility standards
- Compact Module Design — easy to integrate into existing electronics projects and DIY builds
Applications
- 🚪 Automatic Door Sensors — trigger doors to open/close based on presence detection
- 💡 Intelligent Light Control Systems — automate lighting in hallways, offices, garages, and more
- 🔐 Anti-Intrusion Detection — integrate into security systems for motion-based alerts
- ⚡ Microwave Induction Switches — replace traditional PIR sensors with microwave-based reliability
Technical Specifications
| Model | CDM324 |
| Working Frequency | 24–24.25 GHz |
| Output Power | +14 dBm |
| Antenna Beam Width | 80% / 32° |
| Power Supply | +5V DC / 29mA |
| Certification | CE |
| Package Contents | 1 × CDM324 Radar Sensor Module |
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Note: Please allow 1–2 cm measuring deviation due to manual measurement. Colors may vary slightly from product images due to monitor settings.
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Frequently Asked Questions
Q: What is the CDM324 24GHz Radar Sensor Module used for?
A: The CDM324 microwave radar sensor module is designed for body induction and motion detection applications, including automatic doors, intelligent lighting control, microwave induction switches, and anti-intrusion security systems. Its 24GHz operating frequency makes it more accurate and less susceptible to environmental interference compared to traditional PIR sensors.
Q: How does the CDM324 radar sensor module differ from a standard PIR sensor?
A: Unlike PIR (passive infrared) sensors that rely on heat signatures and require line-of-sight, the CDM324 uses active microwave radar technology (24–24.25 GHz) to detect motion through walls, glass, or other non-metallic surfaces. This makes it more versatile and reliable in varied environmental conditions.
Q: What power supply does the CDM324 radar sensor module require?
A: The CDM324 operates on a standard +5V DC power supply and consumes only 29mA, making it energy-efficient and compatible with common microcontroller platforms such as Arduino, Raspberry Pi, and other 5V-based development boards.
Q: Is the CDM324 radar sensor module CE certified?
A: Yes, the CDM324 holds CE certification, confirming that it meets European Union standards for safety and electromagnetic compatibility (EMC).
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.