1.LD2412 Is A Wide-Angle + Long-Distance Human Presence Detection Millimeter Wave Radar Sensor. 2. Its Working Principle Is To Use Fmcw Frequency Modulated Continuous Wave To Detect Human Targets In A Set Space. It Combines Radar Signal Processing And Accurate Human Body Sensing Algorithms To Achieve High-Sensitivity Human Body Presence Status Sensing. 3. It Can Identify Human Bodies In Motion And At Rest, And Calculate Auxiliary Information Such As The Distance To The Target. 4. Mainly Used In Indoor Scenes, Sensing Whether There Is Movement Or Micro-Moving Human Bodies In The Area, And Outputting Detection Results In Real Time. The Longest Sensing Distance Is Up To 9 Meters, And The Distance Resolution Is 0.75m. 5. Provides A Visual Configuration Tool To Easily Configure The Sensing Distance Range, Sensing Sensitivity In Different Intervals And Unattended Delay Time To Adapt To Different Specific Application Needs. Supports Gpio And Uart Interfaces, Plug-And-Play, And Can Be Flexibly Applied To Different Smart Scenarios And Terminal Products. Description: 1. Frequency: 24G-24.25Ghz 2. Modulation Method: FMCW 3. Distance Resolution 0.75m, 0.75~9m (Adjustable) 4.Detection Distance: 5. Detection Angle: ±75° 6. Power Supply: 3.3V Or 5V (Power Supply Capacity more than the 200ma) 7. Current: ~90mA (Typ.) 8. Output Serial Port Level: 3.3V 9. Sweep Bandwidth: 250Mhz 10. Ambient Temperature: -40℃~+85℃ Material: PCB colour: As shown Package Contents: 4 x Sensor Detection Module 4 x Pin Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.