To address this annoyance, LinknLink are offering presence sensors which use mmWave frequencies to detect people and animals rather than infrared. On review here are two LinknLink models, the eMotion Pro and the eMotion Max, plus a THS cable that adds in temperature and humidity measurements to whichever device it’s plugged into. Now that all the devices are setup, let’s talk about the party tricks of mmWave and the eMotion Pro & Max. The LinknLink eMotion Pro and Max can be integrated into other smart home ecosystems, such as Amazon Alexa, Google Home and Home Assistant (HA). In terms of price, the LinknLink eMotion Pro is US$36.99 and the Max is US$54.99.