Jesus Rodriguez 1

• asked Oct 21, 2025

RM08K How to select AP in WIFI(STA) Network Mode

Hi, I've used RM04 for a long time in WIFI(STA) and in list of AP availables had a dot in first colum to select it, now I've changed to RM08K and when I want to select a AP from the list there is no dot or other way to select the de...

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0 votes

1 answers

46 views

Sergey 1

• asked Oct 20, 2025

firmware for LD2410C V1.0

Hello HLK team, I am using an LD2410C V1.0 radar sensor. I recently updated its firmware to version 2.44 using your official mobile application, which correctly identified the sensor model. After the update, the detection range dropped sign...

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0 votes

1 answers

179 views

Zhang Hong Yi 1

• asked Oct 19, 2025

Energy value curve in target info page is miscalculated

The attachment is the "Target Info." page for the radar sensor HLK-LD2410S. Customer has extracted the values of the green energy value curve as the following. 19.1 30.4 23.5 24.6 16.9 6 12 18.1 16.9 19.1 22.9 18.1 0 9.5 14 The belo...

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0 votes

1 answers

94 views

pavlos 1

• asked Oct 17, 2025

HLK LD2412

I recentlty updated LD2412 to V 1.26.25041209 but it does not work well with my integration. I need to get back to V 1.24.24080517 . How can I downgrade the device?

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0 votes

2 answers

137 views

Mcalaciu 3

• asked Oct 12, 2025

HLK-LD2410

Hi, I unintentionally downgraded the firmware from version V 2.44.25070917 to V 2.44.24073110 using the 'HLKRadarTool' on my LD2410C sensor. How can I restore the previous version or update back to 2.44.25070917, since it is not ava...

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0 votes

1 answers

281 views

dsa 1

• asked Oct 9, 2025

LD8001H update rate and protocol

I have purchased a LD8001H, which seems to work well except for its very slow update rate. Changes in the water level take more than five seconds to appear in the 0x01 "empty height" register. I would like the update rate to be fast...

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0 votes

1 answers

131 views

Aleks_N 1

• asked Oct 7, 2025

Question about TTL level compatibility, documentation, and identification of pinout area (LD2461 v1.3 CJ23A)

Hello! I have the following questions regarding the LD2461 v1.3 CJ23A radar module: What TTL level compatibility is provided for the interface of this module? Is direct operation at 3.3V level possible, or is additional level shifting requi...

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2 answers

157 views

esper 1

• asked Sep 29, 2025

Please also send me the HLK-LD2402 antenna radiation pattern.

I am currently developing a product using the HLK-LD2402 sensor. In Korea, when you receive sensor certification, you need to have the radiation pattern data of the antenna. I will attach the 2D and 3D pictures that I used to get the existi...

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0 votes

1 answers

175 views

j_shirazi 1

• asked Sep 27, 2025

Latest LD2420 Firmware

Hi, I have several HLK-LD2420 modules, but with different firmware versions, such as 1.6.2 and 1.5.9, which act differently sometimes, for example, in "OUT" pin behavior! Now I want to know how I can get the latest firmware to upgra...

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0 votes

4 answers

818 views

Tim 1

• asked Sep 21, 2025

LD2415H unable to change configurable parameters

I have an LD2415H, and I have a couple of questions: (1) The documentation says that both the red and green LEDs should flash three times upon power-up, but this doesn't happen with mine. Only the green LED flashes, and I have never see...

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0 votes

3 answers

229 views