Hi-Link LD2420 24GHz Radar Sensor

• Manufacturer: Hi-Link
• Model: LD2420
• mmWave Sensor Chip: Iclegend S3KM1110
• Frequency Band: 24 – 24.25GHz (Complies with FCC and CE Certification Standards)
• Modulation: FMCW (Frequency Modulated Continuous Wave)
• Max Sensing Distance (Wall Mounted): 8 Meters (6 Meters for micro-motion)
• Max Sensing Distance (Ceiling Mounted): 5 Meters (4 Meters for micro-motion)
• Distance Detection Accuracy: ±0.35 Meters
• Resolution: 0.7 Meters
• Sensing Angle: ± 60 Degrees
• Operating Voltage Range: 3.0 – 3.6VDC
• Output and Logic Level Voltage: 3.3VDC
• Operating Current: ~50mA
• Operating Temperature Range: -40°C to +85°C
• Data Refresh Rate: 10Hz
• Communication Protocol: UART (Default Baud Rate = 256000)
• Header Pin Pitch: 2.54mm
• Dimensions: ~(20mm x 20mm)

Pin Description

• 5. 3V3-> Supply Voltage (3.0 – 3.6VDC)
• 4. GND-> Ground
• 1. OT1-> UART TX Pin
• 2. RX-> UART RX Pin
• 3. OT2-> Digital Output (HIGH if human body is detected, otherwise LOW)