AJMRTC HLK-LD102 10.525GHz Hand Sweep Radar Sensor Module, Near-Field Doppler Wave Trigger, Dual UART Serial and 3.3V IO Output, Comes with Pin Header Kit for Embedded Hidden Installation, Smart Cabin

AJMRTC HLK-LD102 microwave radar module adopts Doppler sensing principle to identify hand sweep motion without physical touch. It supports two output modes: UART serial port to read trigger status and adjust parameters, and simple 3.3V IO level output for direct switch trigger to Arduino, ESP32 and STM32. The sensing distance and hold delay can be configured to fit cabinet lights, wardrobe lamps and decorative trigger scenarios. Unlike infrared PIR sensors, this radar is not affected by ambient light, dust and smoke and can be installed behind plastic and wood panels. Metal objects will block radar waves and cause detection failure. The package includes a pin header kit for convenient soldering and wiring test. It is widely used for smart cabinet lights, mirror lamps, non-contact switches, advertising screen trigger and embedded IoT induction control projects.

Specifications

Brand: AJMRTC

Model: HLK-LD102

Radar Frequency: 10.525GHz (10G X-band)

Detection Type: Hand Sweep / Near-Field Motion Trigger

Sensing Range: 0.1~0.2m (Hand Sweep), 1~2m (Proximity)

Sensing Angle: 110° ±10°

Output: UART Serial + 3.3V GPIO

Working Voltage: DC 3.3V ~ 12V

Typical Working Current: ~11mA

Default Hold Delay: 5s, Lock Time: 1s

Operating Temperature: -20°C ~ +60°C

Included Accessory: Pin Header Kit

Application: Smart Cabinet Light, Non-contact Gesture Trigger, Embedded Induction, DIY Sensor