Product Description:
YJJ LD2410C 24G Features Intelligent Sensor With Inductive Radar Module Bluetooth Functionality
Features:
I. Core Parameters
Radio Frequency Parameters
Operating Frequency: 24 - 24.25 GHz, FMCW Frequency Modulated Continuous Wave, Bandwidth 250 MHz (CE/FCC Certified)
Antenna Architecture: 1 Transmit 1 Receive (1T1R)
Detection Performance
Static Human (Sitting / Sleeping, Minimal Breathing Movement): 0.75 - 6m
Human Movement: Maximum Distance 8m
Detection Angle: Horizontal ±60° (120° Wide Angle), Measuring Distance Step 0.75m Adjustable
Electrical Specifications
Power Supply: DC 5V, Operating Current ≈ 79mA, Power Supply Recommendation ≥ 200mA
Pins (5-pin 2.54mm standard pin header: VCC/GND/OUT/RX/TX)
OUT: 3.3V Level Output, Presence = High, Absence = Low (Switching Quantity)
TX/RX: 3.3V TTL Serial Port, Default Baud Rate 256000, ASCII Protocol, Can Output Distance / Presence Status
Operating Temperature Range: -40°C - +85°C, Resistant to High and Low Temperatures
Size: 16 × 22mm (Compact Surface Mount Type, Superior to LD2410B Slim Model) Additional functions
Built-in light sensor detection + Bluetooth debugging, mobile app "HLKRadarTools" for wireless sensitivity adjustment, delay setting, detection range, and OTA firmware upgrade
II. Product Features (Compared with Infrared PIR)
Capable of detecting stationary human: Even if a person is sitting still or sleeping with slight chest breathing, it can be recognized. PIR only detects movement and may mistakenly turn off the light.
Penetrability: Can penetrate plastics, acrylics, and thin wooden boards, unaffected by darkness, smoke, temperature, or curtains.
Protection against false triggering by small animals: Can be software-protected against interference from small-sized animals like cats and dogs.
Dual output: OUT switch quantity (simple drive for relays) + UART serial port (for MCU/PLC to collect data)
III. Application Uses
1. Smart Home (Main Product)
Human-sensing lights, magnetic track lights, entrance / bathroom lights turn on when people come and turn off after they leave with delay.
Air conditioners, fresh air units, bathroom heaters: Power on when someone is present, power off in standby mode for energy saving when no one is present.
Smart toilets, bathroom mirror lights: Start and stop based on human presence
2. Office / Commercial
Office, meeting rooms: Intelligent lighting, energy-saving for when the room is empty
Corridors, elevator carriages have detection, escalators with human presence start and stop
3. Security & Industrial Control
Cabinet / power distribution room alarms when someone enters, human presence detection in equipment compartments
Lockers, self-service equipment with presence detection
Reminders for personnel staying in storage areas
4. Small Household Appliances Accessories
Smart clothes dryers, electric heating towel racks, heaters with human-sensing start and stop
IV. Differentiation of the Same Model
LD2410B: 7×35mm long strip type, parameters are the same, but the package is different
LD2412: Long-distance model, detection range of 10m+
Specifications:
| Operating frequency |
24 - 24.25 GHz, FMCW |
| Antenna architecture |
1 transmit 1 receive (1T1R) |
| Breathing movement |
Maximum range 8m |
| Detection angle |
Horizontal ±60° |
| Power supply |
DC 5V |
| Operating current |
79mA |
Product Tags:
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YJJ LD2410C 24G Features Intelligent Sensor With Inductive Radar Module Bluetooth Functionality Images
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