3x LD2410C Human Presence Radar Sensor Module, 24GHz ISM Band, 6m Sensing Distance, Non-Contact, Serial Port IO Level Output, Proximity Detection

Pairs well with home assistant. Use in automation to turn on lights on and off when someone enters room. Better than IR sensors. Can detect minor movement even through furnature and walls. You can also measure distance away from sensor to detect movement entering or leaving room. Would recommend and can use with ES32 board

Amazing sensor the distance is incredible I'm definitely purchasing more. FYI this isn’t the medical heart rate tracking one.

Bought these to use as simple presence detectors with ESPHome, and they work great. Soldering the parts to a perfboard was super easy, and they are incredibly responsive. You can connect them up to Home Assistant via ESPHome, and they are incredibly useful for presence detection. Just remember to do a little fine-tuning when you get them to ensure that you get the settings right via engineering mode.

One came DOA and Amazon doesn't offer any support. I don't want to return all 3 when only 1 is broken. I will not buy from this seller again. The product itself is cool. Works over BLE with Home Assistant, or you can hook it to an ESP32 for other connectivity options.

Fantastic little devices!!! I've used these in combination with esp32-c3 MCUs and they perform flawlessly as presence sensors and can integrate with home assistant. Will be buying more soon!