Mawalde 24G mmWave LD2420 Human Presence Radar Sensor Motion Detection Module
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$8.50at WalmartChecked Nov 9
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This is a bare 24GHz mmWave radar module built on the LD2420 chip, sold as a single board with header pins. It detects human presence and motion from 0.75 to 6 m at up to ±60°, running on 3.3V at about 50mA, and reports over 3.3V serial ASCII or a simple high/low level output. It suits makers and hobbyists building presence-aware lights, alarms or ESP32/Arduino projects who want a small, low-power sensor they can wire and configure themselves. Compared with infrared PIR sensors it sees through thin non-metallic coverings and detects stationary people, but it is a component, not a finished product: no case, no cable, no library support beyond the serial protocol.
In stockSold by NY Electronics Co. LtdReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
This is a 24 GHz millimeter-wave radar module for human presence and motion detection. It uses FMCW modulation and operates in the 24G-24.25GHz band, with a sweep bandwidth of 250MHz.
The detection distance is adjustable from 0.75 to 6 m, and the detection angle is ±60°. It outputs data over a 3.3V serial connection as ASCII, or as a high or low level signal at 3.3V. The module comes with pins fitted.
