

Hi-link HLK-LD2450 24GHz Radar Sensor Module With Bluetooth
This sensor serves as a replacement for a PIR sensor and works on the basis of microwaves and the doppler effect.
- Delivery in 2 to 4 working daysFree in Islamabad & Rawalpindi above Rs 5,000
- Cash on deliveryPay when your parcel arrives
- 7-day checking warrantyDead-on-arrival items replaced
- Packed with careAnti-static & padded packaging
Highlights
- You can configure and update this sensor via the HLKRadarTool app on Android/iOS.
- Detection range up to 6 m (wall-mounted). :contentReference[oaicite:2]{index=2}
- Captures micro-movements; unaffected by environment (light, temperature, humidity). :contentReference[oaicite:4]{index=4}
- Penetrates non-metal enclosures - no surface openings required. :contentReference[oaicite:5]{index=5}
- Presence-aware control of lighting, HVAC, and appliances.
- Smart toilets with automatic lid control.
- Doorway detection or proximity-based interactions in offices and public spaces. :contentReference[oaicite:6]{index=6}
- Supports wall-mount setup at 1.5-2 m height for optimal coverage. :contentReference[oaicite:12]{index=12}
Specifications
- Frequency
- 24 GHz ISM band (24-24.25 GHz), using FMCW modulation and 250 MHz sweep bandwidth. :contentReference[oaicite:0]{index=0}
- Ultra-compact size
- 15 × 44 mm. :contentReference[oaicite:1]{index=1}
- Wide coverage
- ±60° azimuth, ±35° elevation. :contentReference[oaicite:3]{index=3}
- Power
- 5 V DC input; >200 mA current. :contentReference[oaicite:7]{index=7}
- Interfaces
- UART serial output, default baud rate 256,000; 1 stop bit, no parity. :contentReference[oaicite:8]{index=8}
- Data Rate
- 10 Hz (10 frames per second). :contentReference[oaicite:9]{index=9}
- Operating Temp
- 40 °C to +85 °C. :contentReference[oaicite:10]{index=10}
- Dimensions
- 15 mm × 44 mm. :contentReference[oaicite:11]{index=11}
About this product
This sensor serves as a replacement for a PIR sensor and works on the basis of microwaves and the doppler effect. Due to a difference in speed, this sensor can detect motion, this also works through almost all materials except metal. The sensor status can be read via the UART interface or via Bluetooth to read out more information such as detection distance.
The sensor can be used in different ways:
•You can use the sensor with ESPHome via the following library: ESPHome Hi-Link HKL-LD2450
•You can read the sensor with a microcontroller such as an Arduino via the following library: arduino-lib_HLK-LD2450_Radar
See the following page for more information: Drive
Check the tab "Downloads" for more information and/or downloads.
Key Features
Applications
Ideal for smart home, commercial, and industrial automation uses:
Technical Specifications
Installation & Usage
•Ensure antenna faces the detection zone, without obstructions or strong reflections. Avoid interference from fans, HVAC outlets, or swinging objects. :contentReference[oaicite:13]{index=13}
•Install…








