Linptech Human Presence Sensor Microwave 24G

Easily paired and integrated with Hubitat. Works as expected, will buy again

I have one of these for the lights in my office, and it works flawlessly using Home Assistant. I was so pleased that I purchased a second and third unit to watch for someone coming down the stairs or approaching the office door. Not wanting to put the Presence Sensor in sight, I mounted one below the stairs, pointing up through the top steps. The other one was placed in the boiler room facing THROUGH THE WALL for people approaching the office door. They work perfectly, and both are neatly out of sight. With Home Assistant, I set notifications to go to my iPhone, and I can hear descriptive notifications in my hearing aids, without anyone else hearing the notification. Perfect security option!

These devices have worked incredibly well for me in terms of reliability in detecting presence and communication. I have four of these Zigbee devices spread out across the house, but they stay connected to the hub without any drop-outs. In over a month of use I haven't experienced noticeable false negatives or positives, but I have it set up with a delay before non-occupancy triggers an event. Initially a fan gave me some trouble before I realized the detection zone of the sensor requires it to be positioned a certain way, which does limit mounting options. I set the sensitivity at either a four or a five to keep occupancy triggered when people are sitting still. I'm using it with Home Assistant and the Zigbee2MQTT integration which provides better control and information.A few preferences:The LED light flashes once every 3 seconds when occupancy is detected which is very annoying in a dark room. I disassembled the unit and put black liquid tape over LED 1. It needs to be pretty thick and watch out for the illumination sensor which is right next to it. I put tape over the sensor while painting the LED. The typical black tape trick is not fully effective but OK if you want a milder light.The mounting bracket is not that great. I just used 3M tape on the device or on one of these right-angle USB-C adapters which work really well as a mount. https://www.amazon.com/dp/B0CNGFZ1JDThe white color stands out too much for my use cases, so I painted them matte black when I was "disabling" the LED to make them less noticeable where I had installed them. They're very easy to take apart including removing the grey sensor window.

Just put the Hubitat hub in Zigbee inclusion mode and plugged in the sensor. Hub quickly found it and added it automatically using the driver designed for this device. No need for the manufacturer's proprietary hub or app, no need to install a special driver.Live in the desert so am always mindful of AC use. Got a casita where I want to set thermostat/lights/fan/door lock according to whether or not it is occupied. Motion detectors kept deciding, after a while, that casita was empty when, in fact, occupant working at computer simply was not moving enough. Lights would go out, door would lock, AC and overhead fan would turn off. This presence sensor has solved that problem. Still use motion sensors to initiate "occupied" settings and have "unoccupied" settings kicked off when the presence sensor is inactive for a couple of minutes.Since the sensor has to be plugged into 110v, I plugged it into a $10 matter smart socket. Socket turns on when motion sensors detect occupancy. That socket is turned off as part of the completion of the "unoccupied" settings initiated by the presence sensor. So, am I saving electrons? Maybe a little, net: the more power hungry presence sensor is not drawing power but a small fraction of the time instead of 24/7; however, that smart socket is drawing a little bit 24/7.

I had ordered one of these devices back in March, and it worked so well that I ordered two additional ones. I have paired them with a Hubitat Hub, and can confirm that it does work with that platform with both the built-in driver in the hub, as well as the community Tuya mmWave driver that is available in the Hubitat Package Manager.The device is remarkably sensitive and can detect motion from quite a distance (6 meters, if not farther). Please note that installation location is important. I had a ceiling fan in one location, and if the fan was on, the device would not go "inactive" for motion detection, so plan your placement carefully!Also, if you pair with Hubitat, be sure to give it time (up to 24 hours?) for it to fully show all the motion and illuminance capabilities.Linptech support was very helpful and responsible for help via Amazon Seller interactions, and was willing to dive into the details to help me with my initial challenges (which were patience and knowledge issues on my part).One thing to note is that you need to have firmware version 1.0.6 on the device to have the capability to disable the LED, and the only way to upgrade the firmware currently is via the Tuya hub. Two of mine came with 1.0.5, so they went in locations where the LED doesn't matter.So, depending on which firmware comes on the device, you might not be able to turn off the LED in a non-Tuya (Hubitat) hub. But other than firmware updates, the rest seems to work well.