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24GHz Radar Human Presence Sensor Module
$6.90
- 24GHz Radar Presence Detection
Detects human presence and motion using 24GHz microwave radar. Outputs clear “Presence / No Presence” status for lighting, appliances, and IoT systems. - Dual Output: Digital OUT + UART
Provides direct OUT pin (3.0V High when detected, 0V Low when idle) plus UART (8N1, 11200 baud) for debugging and system integration. - Wide Voltage Input (3.3–5.5V)
Compatible with 3.3V and 5V MCUs. Low typical current (100µA) with 70mA peak @5V. - Adjustable Detection Range (0–5m)
Detection distance can be tuned based on application needs. Wide 110° horizontal and vertical antenna angle for broad coverage. - Designed for Smart IoT Applications
Ideal for smart lighting, appliance wake-up control, corridor sensing, and industrial presence detection.
Overview
The RKB1161L 24GHz Radar Human Presence Sensor Module (SRK1101 solution) is a compact microwave radar board designed for reliable human presence and motion detection.
Operating at 24GHz, the module detects human movement and presence through electromagnetic wave transmission and mixing processing, providing stable digital output signals.
Features
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Digital OUT pin (3.0V High = presence detected, 0V Low = no presence)
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UART interface (11200 baud, 8N1) for configuration and integration
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Wide supply range: 3.3–5.5V
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Adjustable sensing distance: 0–5m
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110° H/V wide detection angle
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Ultra-low standby current (100µA typical)
Suitable for
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Smart lighting (auto ON/OFF control)
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Appliance wake-up and energy saving systems
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Industrial IoT occupancy detection
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Corridor, stairway, and automation control
Specifications
| Model | RKB1161L |
| Frequency Band | 24GHz |
| Supply Voltage | 3.3–5.5V |
| Typical Current | 100µA |
| Peak Current | 70mA @5V |
| EIRP | 5 dBm |
| Detection Distance | 0–5m (Adjustable) |
| Antenna Angle | 110° (H) / 110° (V) |
| Operating Temperature | –40°C to 55°C |
| Operating Humidity | 0–85% RH |
Notes:
Do not place metal panels directly in front of the radar antenna.
OUT and UART are 3.0V logic level. Use level shifting if your MCU uses different logic levels.
| Weight | 0.1 kg |
|---|---|
| Dimensions | 10 × 10 × 3 cm |
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