HLK-LD2410B-P Human Presence Radar Module Sensor Board with Pins Bluetooth LD2410B LD2410 Human Radar Sensor Module with 1.25 to 2.54mm Dupont Cable

I recently ran into a situation where one of my PIR motion detectors was partially obscured by an object in the room. Because the sensor is in a fixed location and the object blocking it can't be moved right now, I wanted to try a different sensor that would work better in this location. Enter the JESSINIE HLK-LD2410B-P. This tiny module was fairly easy to integrate into Home Assistant (you can use either ESP Home or the BLE integration - but as I found out, not both at the same time). I came across a few different 3D printed cases for this board and settled on the minimalist magnetic mount seen in the picture. The LD2410B is super compact, reasonably priced and highly configurable. Given the tight pin pitch, I really appreciate the per-soldered header and included data/power cable. I haven't yet tried to optimize my setup but I have confirmed it works well with the default settings.

The device was advertised and works well. It was easy to communicate with the device using the specified Android App via Bluetooth. I was also able to use a USB to serial module to communicate with the device.

I understand that the sensor might work just fine, but how do I find out?The PCB has 5 pins but comes with 6 pins cable that can't be plugged anywhere.Yes the picture of the cable on the product page shows 5 wires, but I received a cable with 6 wires and 6 pins.Ruined my day.

What can i say it works. Use the Bluetooth to set up and good to go using just the power and signal wire