EBYTE E54 Series 24GHz Millimeter Wave Radar Module Product Production

The E54 series includes multiple products, and the E54-24LD12C and E54-24LD12D represent two distinct technical routes and application philosophies. Understanding their differences is key to precise selection.

E54-24LD12C: Battery-Grade Ultra-Low-Power Human Presence Sensor

• Core Positioning: Designed for battery-powered, long-endurance, ultra-low-power scenarios. Its primary goal is to reliably detect human presence—including movement, micro-movement, sitting, and even lying down—with minimal energy consumption. It pursues the ultimate balance between "perception effectiveness" and "energy efficiency."

• Technical Core: Adopts a single-transmit single-receive antenna, based on FMCW (Frequency-Modulated Continuous Wave) principles, and is equipped with a contactless presence detection algorithm optimized for low power consumption. It does not focus on precise 2D coordinate positioning but instead determines whether a living being exists within a specific distance range through echo energy analysis.

• Analogy: Like an "ultra-low-power smart switch," it can reliably determine "whether there is a person in the area" and indicate the approximate distance, but does not care "who it is" or "their exact location."

E54-24LD12D: High-Precision Multi-Target Trajectory Recognition Radar Module

• Core Positioning: Targets complex scenarios requiring real-time positioning, trajectory tracking, and multi-target identification. Its primary goal is to accurately obtain the real-time position (distance, angle), speed, and movement trajectory of one or more targets in a 2D plane.

• Technical Core: Adopts a single-transmit dual-receive antenna array, capable of resolving target azimuth information through MIMO (Multiple-Input Multiple-Output) or DBF (Digital Beamforming) technology. Combined with advanced positioning and tracking algorithms, it can achieve multi-target differentiation and trajectory prediction.

• Analogy: Like a "miniature indoor GPS," it can not only detect "how many people are present" but also real-time map "each person's exact position and movement path in the room."

Technical Parameter Comparison

In-Depth Analysis of Typical Application Scenarios

The different inherent characteristics of the two products define their entirely distinct application domains.

E54-24LD12C (Ultra-Low-Power Presence Perception) Application Scenarios:

• Battery-powered smart devices: Wireless human presence sensors, home/away detection for smart locks, low-power security detectors.

• Intelligent energy-saving control: Automatically controls switches of lights, air conditioners, displays, etc., based on room occupancy, achieving extreme energy efficiency with "lights on when people arrive, off when people leave."

• Privacy-sensitive areas: Human presence detection in bathrooms, changing rooms, bedrooms, replacing cameras to protect privacy.

• Presence retention judgment: Seat occupancy monitoring in conference rooms and libraries to determine if someone is sitting and studying or working.

E54-24LD12D (High-Precision Trajectory Tracking) Application Scenarios:

• Smart home interaction: Follow-me air supply for air conditioners/fans (detects human position and adjusts airflow direction), gesture control for smart TVs, or wake-up when users approach.

• Commercial behavior analysis: Customer flow analysis in stores, dwell time statistics in front of exhibition booths, precise interaction triggers for smart displays.

• Smart bathroom: Automatic lid opening/flushing for smart toilets (based on human approach and departure trajectory).

• Multi-target area management: Personnel positioning and counting in small offices and smart classrooms.

• Elderly care monitoring: Tracks elderly people's movement in specific areas to detect falls or abnormal prolonged stationary states.

Selection and Development Recommendations

Clarify Primary Requirements

• If your project prioritizes long battery life (battery-powered) and cost-effective presence detection without needing exact location information, the E54-24LD12C is the only choice.

• If your project requires precise positioning, trajectory tracking, multi-target differentiation, and uses continuous power supply (e.g., plug-in or large-capacity battery), the E54-24LD12D is the better solution.

Balance Performance and Cost

• The E54-24LD12C has obvious advantages in power consumption and cost, making it suitable for large-scale, distributed consumer IoT products.

• The E54-24LD12D provides richer perception data but has a higher unit price and system power consumption, making it suitable for mid-to-high-end products with higher requirements for interaction and intelligence.

Development Resources

• Both products provide visual PC tools (RF_Setting_E54_C/D) for parameter configuration, data visualization, and firmware upgrades, greatly reducing development barriers.

• Series D has a more complex data output format, including multi-target coordinate information, requiring the main control MCU to have stronger processing capabilities for parsing and application.

The simultaneous launch of EBYTE's E54-24LD12C and E54-24LD12D marks a precise segmentation of millimeter-wave radar technology for the fragmented IoT market. Series C has optimized ultra-low-power presence perception to the extreme, serving as the cornerstone for building "invisible" energy-saving and security systems; Series D brings dynamic trajectory tracking to consumer and commercial applications, opening up new possibilities for spatial interaction intelligence.

Choosing between the two is not just a technical decision but also a definition of the final product form and user experience. For pursuing "unobtrusive" automation and energy efficiency, the E54-24LD12C is a reliable partner; for creating "intuitive" proactive intelligent interactions, the E54-24LD12D is a powerful engine. In the era of interconnected smart everything, EBYTE's E54 series provides solid and flexible dual-core power for a more precise, intelligent, and user-centric perception layer.