AJMRTC HLK-LD102 10GHz Hand Wave Radar Sensor, Near Field Hand Sweep Trigger Module, UART Serial & 3.3V IO Output, Microwave Doppler Motion Sensor for Smart Home Switch DIY, Module Without Pin

AJMRTC HLK-LD102 10GHz hand sweep radar sensor works on Doppler microwave induction technology to realize touchless hand-wave triggering. It supports UART serial communication and 3.3V IO level output, which can connect easily with most mainstream MCUs for secondary development. All core parameters including sensing range, hold delay and blocking time can be modified by serial AT commands to fit different usage scenarios. The sensor performs steadily in dim light, dust and smoky environments, not disturbed by normal ambient light changes. It is widely applied for cabinet lights, mirror lights, non-touch switches, smart wardrobe control, small automatic equipment and all kinds of electronic DIY projects. This listing provides the bare circuit board only, without pre-soldered header pins, so you can freely weld wires or pads according to your project layout.

Specifications:

1. Model: HLK-LD102
2. Operating Frequency: 10.525GHz
3. Supply Voltage: 3.3V ~ 12V DC
4. Output Level: 3.3V TTL
5. Signal Interface: UART Serial Port + IO Detection Output
6. Operating Temperature: -20 ~ +60
7. Startup Stabilization Time: 15s (Typical)
8. Default Trigger Hold Delay: 5s (Typical)
9. Default Block Time: 1s (Typical)
10. Included: Bare PCB Module, Without Pin Header