The EBYTE E54-24LD series are 24GHz millimeter-wave human presence sensors for AIoT applications. The E54-24LD12A is a wide-coverage sensor detecting motion and micro-motion up to 10m (±60°). The E54-24LD12B is a vital-signs presence sensor for static humans (breathing/heartbeat) up to 4.5m (±45°). The E54-24LD12C is an ultra-low-power (65μA) sensor supporting motion, micro-motion, and static sitting/lying detection up to 6m (±60°). The E54-24LD12D is a high-precision multi-target trajectory tracking module (up to 3 targets, 8m, ±60° azimuth).
| Parameter | E54-24LD12A | E54-24LD12B | E54-24LD12C | E54-24LD12D |
| :--- | :--- | :--- | :--- | :--- |
| Detection Target | Motion / Micro-motion | Motion / Static (vital signs) | Motion / Micro-motion / Static | Motion / Trajectory tracking |
| Max. Range (Motion) | 10m | - | 6m | 8m |
| Max. Range (Static) | - | 4.5m | 4m | - |
| Detection Angle | ±60° | ±45° | ±60° | ±60° (Azimuth) / ±30° (Elevation) |
| Size (mm) | 20.0×20.0 | 18.0×15.0 | 19.0×16.0 | 15.0×44.0 |
| Supply Voltage | 3.0~3.6V | 3.0~3.6V | 3.0~3.6V | 3.6~5.5V |
| Working Current | 50mA (Typ.) | 50mA (Typ.) | 65μA (Typ.) | 66mA (Typ.) |
| Interface | UART/GPIO | UART/GPIO | UART | UART |
| Mounting | Ceiling / Wall | Ceiling / Wall | Wall (Recommended) / Ceiling | Wall |
| Max. Targets | - | - | - | 3 |
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