YJJ LD2410C 24G Features Intelligent Sensor With Inductive Radar Module Bluetooth Functionality

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:

Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, photodiodes, Japan FIGARO, UK CITY, ALPHASENSE full range of semiconductors, catalytic, electrochemical gas sensors, French HUMIREL/MEAS humidity sensors and other international well-known companies authorized agents or distributors, to provide customers with product information, products Solutions, product selection, supply guarantee and logistics services, etc.