Temperature sensors are an important yet often overlooked part of a HomeKit setup. Even working as a passive tracking device, I want to add them to every room to understand more about whats happening in the air. The aree Temperature Sensor is a great option for HomeKit fans with its compact size and detailed monitoring options. Lets have a look.HomeKit Weekly is a series focused on smart home accessories, automation tips and tricks, and everything to do with Apples smart home framework.Whats in the box?The arre Temperature Sensor keeps things simple with a compact design and a focus on doing what it claims to do. Inside the box, youll find:The actual arre sensorThe manual (you really wont need it)With Thread support, youll have reliable connectivity in a low-power state. In addition to temperature, humidity, and barometric pressure, it can monitor VOC air quality, providing a more detailed environmental picture. Size-wise, its really tiny and can fit almost anywhere. I have it on a bookshelf, and its barely noticeable. In fact, my wife hasnt noticed that I installed it. Here are the dimensions:Dimensions: 40mm x 40mm x 10.2mmWeight: 2.85 ozPower: 1 CR2032 batteryThe overall compact design makes it easy to place in any room, bookshelf, behind a TV, etc.Adding to HomeKitAdding the arre Temperature Sensor to HomeKit is super easy. Open the Home app, scan the Matter QR code on the device or in the manual, and follow the prompts to assign the sensor to a room. Thanks to Matter and Thread, pairing it with your HomeKit environment is fast and easy.Once added, youll have access to real-time readings for temperature, humidity, barometric pressure, and VOC air quality. You can integrate these readings into HomeKit automations, such as turning on a HomeKit fan when the temperature rises or activating a HomeKit air purifier when VOC levels goes above a threshold that you arent comfortable with.Why I like the arre temperature sensorThe arre Temperature Sensor stands out for me with its ability to measure multiple things in something that can fit in the palm of your hand. Its ability to measure VOC air quality, temperature, humidity, and barometric pressure, provides a more comprehensive view of your environment. Having Matter support built-in ensures compatibility with any smart home platform (Amazon, Google, SmartThings, and HomeKit), so you can easily swap platforms in the future without needing to rebuy any gear.Designed for low-power operation with Thread technology, Ive found the arre Temperature Sensor to be extremely reliable, so its a great addition to your home. Ive not owned it long enough to know how long the battery lasts, but I suspect itll be many months if not years.Wrap up on arre Temperature SensorThe aree Temperature Sensor is a complete environmental sensor designed to elevate your HomeKit tracking for air and temperature. Its small size, strong feature set, and Matter compatibility make it great for maintaining comfort and improving air quality in your home.If youre looking for a versatile and reliable sensor to optimize your HomeKit automations and environmental monitoring, the arre Temperature Sensor is an awesome choice. You can buy it from Amazon or directly from arre. Add 9to5Mac to your Google News feed. FTC: We use income earning auto affiliate links. More.Youre reading 9to5Mac experts who break news about Apple and its surrounding ecosystem, day after day. Be sure to check out our homepage for all the latest news, and follow 9to5Mac on Twitter, Facebook, and LinkedIn to stay in the loop. Dont know where to start? Check out our exclusive stories, reviews, how-tos, and subscribe to our YouTube channel