mmWave Radar - 24GHz Human Presence Detection Sensor (9 Meters)

The mmWave radar sensor detects human presence through stillness and motion, offering high sensitivity, compact size, and strong anti-interference capabilities.

UART TxOfficial table 2 row 1
Sensor UART Transmiting
Type · uart
UART RxOfficial table 2 row 2
Sensor UART Receiving
Type · power
GPIO1Official table 2 row 3
Universal Input and Output
Type · digital io
GPIO2Official table 2 row 4
Universal Input and Output(By default, it outputs high when people presence detected, otherwise, output low)
Type · digital io
GNDOfficial table 2 row 5
Ground

Start wiring

UART

Verify supply voltage and logic levels before powering up.

Module pins: UART Rx, VCC, GND, UART Tx. Schematik maps them to your board in the app.

Related groups

4 groups

Air quality

Choose between MQ gas sensors, VOC/eCO2 indoor-air sensors, true CO2 modules and particulate sensors without treating every air-quality breakout as the same detector.

Sensors · Gas & air-quality sensors · 29 parts

Temp and humidity

DHT11, DHT22/AM2302, and DHT20/AHT20 sensors solve the same broad job, but only some are acceptable substitutes in the same circuit.

Sensors · Environment sensors · 19 parts

Environment sensors

Choose between temperature-only, temperature/humidity, pressure and indoor air-quality modules without treating every environmental sensor as a drop-in substitute.

Sensors · Environment sensors · 8 parts

Light and colour

Photoresistors and color sensors both respond to light, but they expose very different signals and are not sensible drop-in substitutes.

Sensors · Light & color sensors · 6 parts

Pin	Position	Type	Function
UART Tx	Official table 2 row 1	uart	Sensor UART Transmiting
UART Rx	Official table 2 row 2	power	Sensor UART Receiving
GPIO1	Official table 2 row 3	digital io	Universal Input and Output
GPIO2	Official table 2 row 4	digital io	Universal Input and Output(By default, it outputs high when people presence detected, otherwise, output low)
GND	Official table 2 row 5	ground	Ground
VCC	Official table 2 row 6	power	Power +
NC	Official table 2 row 7	pin	Reserved, left floating
NC	Official table 2 row 8	pin	Reserved, left floating

Pinout

Start wiring

Air quality

Temp and humidity

Environment sensors

Light and colour