Overviewβ
The RKB1161LX1 is a 24GHz mmWave radar module developed by Ingenic (Xiamen) Co., Ltd., utilizing FMCW modulation to support both motion detection and presence detection. The module can penetrate non-metallic enclosures and detect subtle movements such as human breathing, making it suitable for smart security, smart home, and other applications.
1. Product Overviewβ
1.1 Key Featuresβ
- Motion and presence detection: Detects not only human movement but also subtle motions such as breathing
- Non-metal penetration: Can penetrate plastic, glass, wood, ceramic, and other non-metallic enclosures
- Rich data output: Outputs target distance, velocity, azimuth angle, signal strength, and other information
- Low power consumption: Average current of only 100Β΅A, suitable for battery-powered applications
- Ultra-compact size: Module dimensions of only 20 Γ 20 Γ 1.0mm for easy integration
- OTA upgrade: Supports online parameter configuration and firmware over-the-air updates
1.2 NE301 Application Scenariosβ
In the NE301 sensor expansion board, the mmWave radar serves as a high-precision presence detection sensor, capable of detecting subtle human movements such as breathing through non-metallic enclosures, enabling more accurate trigger snapshots than PIR. When the radar detects human presence or activity, it sends an IO signal to wake up the NE301 for snapshot capture.
| Application Scenario | Description |
|---|
| Smart Security | Detects human presence in the area, triggering precise snapshot capture |
| Smart Home | Triggers NE301 to capture and record personnel entry/exit events |
| Health Monitoring | Detects subtle movements such as breathing, triggering anomaly status snapshots |
| IoT Gateway | Low-power presence detection, waking NE301 on demand for snapshot capture |
2. Specificationsβ
2.1 Basic Parametersβ
| Parameter | Specification |
|---|
| Model | RKB1161LX1 |
| Manufacturer | Ingenic (Xiamen) Co., Ltd. |
| Operating Frequency | 24 ~ 24.25 GHz |
| Modulation | FMCW |
| Module Dimensions | 20 Γ 20 Γ 1.0 mm |
| Pin Header Pitch | 2.0 mm |
| Software Version | RKB1161LX1_V1.1_20241023 |
| Parameter | Specification | Description |
|---|
| Motion Detection Range (horizontal) | 7 m | Maximum straight-line detection distance |
| Presence Detection Range (horizontal) | 4 m | Can detect subtle movements such as breathing |
| Detection Cycle | 2 times per second | Detection once every 0.5 seconds |
| Data Format | UART | Baud rate 115200 |
| Output Level | TTL-3V | Compatible with 3.3V logic level |
2.3 Electrical Parametersβ
| Parameter | Min | Typical | Max | Unit |
|---|
| Supply Voltage | 3.3 | β | 5.0 | V |
| Average Current | β | 100 | β | Β΅A |
| Peak Current (transient) | β | β | ~80 | mA |
| Output High Level | β | 3.0 | β | V |
2.4 Operating Conditionsβ
| Parameter | Specification | Description |
|---|
| Operating Temperature | -10Β°C ~ 50Β°C | Indoor applications |
| Storage Temperature | -20Β°C ~ 70Β°C | Non-operating state |
3. Pin Definitionβ
The RKB1161LX1 uses a 5-pin, 2.0mm pitch pin header package (pin headers not included), with the following pin definitions:
| Pin | Name | Description |
|---|
| 1 | OUT | Outputs 3V when target detected, 0V when no target |
| 2 | UART_TX | TTL level data transmit (connect to host RX) |
| 3 | UART_RX | TTL level data receive (connect to host TX) |
| 4 | GND | Ground |
| 5 | VCC | Power supply input (3.3V ~ 5V) |
| Item | Information |
|---|
| Document Version | v1.0 |
| Last Updated | 2026-04-08 |