Sensor Definitions

Ensure that the LD2450 firmware version is V2.02.23090617 or later for proper integration functionality.

The newer version of the firmware includes an "auto calibrate" function so you might want to test it out!

The HLK-LD2450 mmWave sensor is used in the MTR-1. Click Here for the datasheet.

AndroidiPhone

1. Open the Play Store.
2. Search for "HLK RadarTool" or click this link!
3. Tap Install.

1. Open the App Store.
2. Search for "HLK RadarTool" or click this link!
3. Tap Get.

RGB Light

• One RGB Neopixel LED. Click on the light bulb or color wheel to change the color. Click on the toggle to turn on or off.

Calibrate SCD40 to 420ppm

• A control option to calibrate the SCD40 CO₂ sensor to outdoor baseline levels.

Sensors

CO₂

• True CO₂ reading from the SCD40. This will be Unknown if you do not have the CO₂ module. SDC40 can be calibrated following this guide.

ESP Temperature

• This is the temperature of the internal microcontroller. Think of it like your measured CPU temp on your PC.

DPS310 Pressure

• Measures the air pressure in the environment.

DPS310 Temperature

• Measures the ambient air temperature using the DPS310 sensor.

LTR390 Light

• Light level measured in lux by LTR390.

LTR390 UV Index

• UV index measured by LTR390.

Moving Target Count

• Count of all moving targets. (max 3)

Presence Target Count

• Count of all presence targets. (max 3)

Still Target Count

• Count of all still targets. (max 3)

Target-1 Angle

• Angle of target in degrees (°) relative to the ld2450 sensor.

Target-1 Direction

• Direction of the target relative to the ld2450 sensor. Possible values are: Stationary, Moving away, Approaching, NA.

Target-1 Distance

• Distance in millimeter (mm) of the target from the ld2450 sensor along the X-axis (negative for left side of the sensor, positive for right side of the sensor). The ld2450 module can detect targets from -3000 to 3000 mm in X direction.

Target-1 Resolution

• The ld2450 target detection range resolution in millimeter (mm).

Target-1 Speed

• Speed of the moving target in mm/s.

Target-1 X

• Distance in millimeter (mm) of the target from the ld2450 sensor along the X-axis (negative for left side of the sensor, positive for right side of the sensor). The ld2450 module can detect targets from -3000 to 3000 mm in X direction.

Target-1 Y

• Distance in millimeter (mm) of the target from the ld2450 sensor in the Y direction (near/far). The ld2450 module can detect targets from 0 to 6000 mm in Y direction.

Target-2 Angle

• Angle of target in degrees (°) relative to the ld2450 sensor.

Target-2 Direction

• Direction of the target relative to the ld2450 sensor. Possible values are: Stationary, Moving away, Approaching, NA.

Target-2 Distance

• Distance in millimeter (mm) of the target from the ld2450 sensor along the X-axis (negative for left side of the sensor, positive for right side of the sensor). The ld2450 module can detect targets from -3000 to 3000 mm in X direction.

Target-2 Resolution

• The ld2450 target detection range resolution in millimeter (mm).

Target-2 Speed

• Speed of the moving target in mm/s.

Target-2 X

• Distance in millimeter (mm) of the target from the ld2450 sensor along the X-axis (negative for left side of the sensor, positive for right side of the sensor). The ld2450 module can detect targets from -3000 to 3000 mm in X direction.

Target-2 Y

• Distance in millimeter (mm) of the target from the ld2450 sensor in the Y direction (near/far). The ld2450 module can detect targets from 0 to 6000 mm in Y direction.

Target-3 Angle

• Angle of target in degrees (°) relative to the ld2450 sensor.

Target-3 Direction

• Direction of the target relative to the ld2450 sensor. Possible values are: Stationary, Moving away, Approaching, NA.

Target-3 Distance

• Distance in millimeter (mm) of the target from the ld2450 sensor along the X-axis (negative for left side of the sensor, positive for right side of the sensor). The ld2450 module can detect targets from -3000 to 3000 mm in X direction.

Target-3 Resolution

• The ld2450 target detection range resolution in millimeter (mm).

Target-3 Speed

• Speed of the moving target in mm/s.

Target-3 X

• Distance in millimeter (mm) of the target from the ld2450 sensor along the X-axis (negative for left side of the sensor, positive for right side of the sensor). The ld2450 module can detect targets from -3000 to 3000 mm in X direction.

Target-3 Y

• Distance in millimeter (mm) of the target from the ld2450 sensor in the Y direction (near/far). The ld2450 module can detect targets from 0 to 6000 mm in Y direction.

Zone-1 All Target Count

• Total targets detected in the zone, whether they are stationary or in motion.

Zone-1 Moving Target Count

• Count of moving targets in the zone.

Zone-1 Still Target Count

• Count of stationary targets in the zone.

Zone-2 All Target Count

• Total targets detected in the zone, whether they are stationary or in motion.

Zone-2 Moving Target Count

• Count of moving targets in the zone.

Zone-2 Still Target Count

• Count of stationary targets in the zone.

Zone-3 All Target Count

• Total targets detected in the zone, whether they are stationary or in motion.

Zone-3 Moving Target Count

• Count of moving targets in the zone.

Zone-3 Still Target Count

• Count of stationary targets in the zone.

Configuration

DPS310 Temperature Offset

• Offset value of the DPS310 Temperature.

ESP Reboot

• Performs a restart of the sensor.

Firmware

• Shows available updates and allows updating inside of Home Assistant.

LD2450 Bluetooth

• Toggles the Bluetooth of the LD2450 to directly connect with a phone to the HLK Radartool App.

Multi Target Tracking

• Turn on/off the Multi Target Tracking option. The initial state set based on the corresponding setting as read from LD2450 module at boot.

Timeout

• The duration, in seconds, for which the presence states will persist even after the detection is cleared. Default is 5 seconds.

Zone Type

• Control the zone detection modes. It can be set to Disabled, Detection or Filter. Selecting the Disabled option will disable zone area detection. Detection mode is used to detect only targets in the specified area, while Filter mode can be used to exclude an area from detection.

Zone-1 X1

• Start X coordinate in millimeter (mm) of the zone from the ld2450 sensor along the X-axis (negative for left side (-3000) of the sensor, positive for right side (3000) of the sensor).

Zone-1 X2

• End X coordinate in millimeter (mm) of the zone from the ld2450 sensor along the X-axis (negative for left side (-3000) of the sensor, positive for right side (3000) of the sensor).

Zone-1 Y1

• Start Y coordinate in millimeter (mm) of the zone from the ld2450 sensor along the Y-axis, values range from 0 to 6000.

Zone-1 Y2

• Start Y coordinate in millimeter (mm) of the zone from the ld2450 sensor along the Y-axis, values range from 0 to 6000.

Zone-2 X1

• Start X coordinate in millimeter (mm) of the zone from the ld2450 sensor along the X-axis (negative for left side (-3000) of the sensor, positive for right side (3000) of the sensor).

Zone-2 X2

• End X coordinate in millimeter (mm) of the zone from the ld2450 sensor along the X-axis (negative for left side (-3000) of the sensor, positive for right side (3000) of the sensor).

Zone-2 Y1

• Start Y coordinate in millimeter (mm) of the zone from the ld2450 sensor along the Y-axis, values range from 0 to 6000.

Zone-2 Y2

• Start Y coordinate in millimeter (mm) of the zone from the ld2450 sensor along the Y-axis, values range from 0 to 6000.

Zone-3 X1

• Start X coordinate in millimeter (mm) of the zone from the ld2450 sensor along the X-axis (negative for left side (-3000) of the sensor, positive for right side (3000) of the sensor).

Zone-3 X2

• End X coordinate in millimeter (mm) of the zone from the ld2450 sensor along the X-axis (negative for left side (-3000) of the sensor, positive for right side (3000) of the sensor).

Zone-3 Y1

• Start Y coordinate in millimeter (mm) of the zone from the ld2450 sensor along the Y-axis, values range from 0 to 6000.

Zone-3 Y2

• Start Y coordinate in millimeter (mm) of the zone from the ld2450 sensor along the Y-axis, values range from 0 to 6000.

Diagnostic

ESP Temperature

• Displays the current temperature of the ESP32 chip.

LD2450 BT MAC

• Bluetooth MAC Address of the LD2450 mmWave sensor.

LD2450 Firmware

• Firmware version installed on the LD2450. Defaults to 2.04.23101915

Online

• Shows the connection status.

Uptime

• Shows the time since last reboot.

RSSI

• Displays the Wi-Fi signal strength.

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