Unboxing LinknLink eMotion Air Battery-Powered Presence Multi-Sensor
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Meet LinknLink eMotion Air – Truly Wireless mmWave Presence Detection for Smarter Home Automation
Presence sensors are among the most useful components in a genuinely automated home, but conventional PIR motion sensors have an important limitation: they are excellent at detecting someone walking into a room, yet they can struggle when that person sits quietly at a desk, watches television or sleeps without making significant movements. The result is familiar to many smart-home users—lights switching off while the room is still occupied, climate routines ending prematurely and automations behaving more like rigid timers than intelligent systems. The LinknLink eMotion Air approaches this problem with a 24GHz mmWave radar sensor capable of detecting subtle human movement, while its battery-powered design avoids the installation restrictions normally associated with wired presence sensors. It also combines temperature, humidity and ambient-light monitoring with a programmable physical button, Bluetooth and Zigbee connectivity, Home Assistant integration and local historical-data storage. After integrating the eMotion Air into several everyday automation scenarios, I found it to be a particularly flexible solution for bedrooms, home offices, living rooms, rental properties and other locations where permanent wiring would be inconvenient. It is not simply a wireless replacement for a PIR sensor; it is a compact multi-sensor designed to become an active part of a broader smart-home system.
The eMotion Air arrives in relatively compact packaging, which is appropriate for a device designed to remain visually discreet once installed. Inside the box, the presentation is straightforward and functional rather than unnecessarily elaborate. The package includes: LinknLink eMotion Air sensor, wall-mounting bracket, luminous identification sticker & nano adhesive tape. The supplied mounting accessories are particularly important because the sensor’s positioning directly affects its usefulness. The adhesive tape enables a quick, non-permanent installation on a wall, cabinet or shelf, while the mounting bracket provides a more controlled orientation. The bracket can also be used for corner placement or as a simple tabletop stand, making it easier to experiment with different locations before committing to a permanent installation. This flexibility immediately made the eMotion Air feel more accessible than many wired mmWave sensors. I could move it between rooms, adjust its angle and test different coverage areas without drilling holes or routing a power cable across furniture. The sensor uses three AAA batteries, which are installed behind the rear cover. LinknLink advertises an operating lifespan of approximately 18 months, although the real result will naturally depend on detection frequency, wireless mode, signal conditions and reporting intervals. Even allowing for some variation, the ability to operate for an extended period from readily available batteries is central to the product’s appeal.
The eMotion Air has a clean, minimal design dominated by a plain white front panel and a compact rectangular enclosure. Its neutral appearance allows it to blend relatively easily into modern rooms without drawing attention to itself. The enclosure feels light, as expected from a battery-powered sensor, but it does not feel fragile. The panel alignment is tidy, the edges are smoothly finished and the ventilation openings around the sides allow the internal temperature and humidity sensors to sample the surrounding air more effectively. The housing is considerably less conspicuous than many smart-home devices that use prominent lenses, status lights or glossy black panels. There is no obvious PIR dome on the front because the 24GHz radar signal can operate through the enclosure. This gives the eMotion Air a cleaner appearance and makes it easier to position in bedrooms, offices and living areas where a conventional security-sensor aesthetic could look out of place. One of the more unusual design decisions is that the lower part of the front panel functions as a physical smart button. It supports single-press, double-press and long-press actions, allowing one compact device to handle both environmental sensing and direct scene control. I found this combination more practical than it initially appeared. A sensor mounted beside a bed, for example, can monitor occupancy and room conditions while also providing a physical control for lighting, curtains or a night routine. In an office, the same button can be assigned to a focus scene, media controls or an all-devices-off command. The included luminous sticker can be used to identify the button or make it easier to locate in low light. It is a small accessory, but it reinforces the idea that the eMotion Air is intended to be interacted with rather than hidden completely out of reach.
The main advantage of the eMotion Air is that it can be installed in locations where a wired mmWave sensor would be inconvenient or visually intrusive. Because it runs from AAA batteries, there is no need to position it near a USB socket, route a cable along the wall or install an additional power adapter. I was able to test it on a shelf, attach it to a wall and place it in a room corner using the adjustable bracket. This ability to experiment is valuable because mmWave sensors are sensitive to placement. Reflections from walls, doors, windows and large objects can influence the detection area, while movement in adjoining spaces may occasionally be visible to radar if the sensitivity and orientation are not configured carefully. For the most dependable results, I would not permanently mount the sensor immediately. I would first place it temporarily in the intended location, observe its detection behaviour and adjust its angle before securing the bracket with tape or screws. In a living room, a corner position facing the seating area provided a logical coverage pattern. In a home office, positioning the sensor toward the desk allowed it to detect continued occupancy while I remained seated. For bedroom use, careful positioning was more important because the goal was to detect someone resting without unnecessarily monitoring movement through an open doorway. The wireless format makes these adjustments considerably easier than with a mains-powered sensor. Moving the eMotion Air by half a metre or changing its angle does not require unplugging cables or rearranging nearby furniture.
The defining feature of the eMotion Air is its 24GHz mmWave radar system. Unlike a traditional PIR sensor, which primarily detects changes in infrared radiation caused by body movement, mmWave radar can recognise much smaller movements, including the subtle motion associated with breathing, typing or shifting position in a chair. This distinction becomes important in rooms where people remain still for extended periods. A PIR sensor can switch the lights on when someone enters, but it may eventually consider the room empty if that person sits quietly. The eMotion Air is designed to maintain an occupied state under those conditions. In practical use, this produced more natural automation behaviour. While sitting at a desk, reading or watching television, I did not need to wave my arms or repeatedly trigger another motion sensor to keep the room active. The presence state remained far more closely aligned with actual occupancy. This does not mean that mmWave sensing is completely automatic from the first moment it is installed. Like most radar-based sensors, the eMotion Air benefits from sensible positioning and appropriate sensitivity settings. A rotating fan, moving curtain, robot vacuum or activity through a nearby doorway may need to be considered when defining the detection area. Once positioned correctly, however, the sensor is much better suited than a basic PIR device to automations that should remain active for as long as someone is genuinely present.
The eMotion Air also incorporates temperature, humidity and brightness sensors, turning it into a more complete room-monitoring device. Temperature and humidity readings can be used to observe general room comfort, identify overly dry or humid conditions and create more informed climate routines. In Home Assistant, these values can become part of local automations involving heating, air conditioning, fans, humidifiers or dehumidifiers. For example, occupancy data can prevent climate equipment from running unnecessarily in an empty room, while temperature and humidity values can determine whether additional cooling or ventilation is required. This produces a more considered automation than relying on a single sensor or fixed schedule. The ambient-light sensor is equally useful for lighting control. Presence alone should not automatically switch on a lamp when the room is already bright. By combining occupancy with brightness data, I could create more context-aware routines that activated lighting only when someone was present and the measured light level was below the chosen threshold. Google Home and Alexa can be used for supported voice queries and presence-based actions, although LinknLink notes that temperature- and humidity-based automations are currently restricted by the capabilities of those platforms. Home Assistant therefore remains the stronger environment for users who want complete access to every available entity.
The eMotion Air supports both Bluetooth and Zigbee 3.0, providing two distinct ways to integrate the sensor. Bluetooth is convenient for initial setup and direct communication with the LinknLink application. It reduces the barrier to entry for users who want to configure the sensor from a phone without immediately building a larger Zigbee network. Zigbee is the more compelling option for established smart homes. It offers option for established smart homes. It offers broader hub compatibility, efficient low-power communication and generally faster integration into multi-device automation systems. Switching between Bluetooth and Zigbee can be performed by holding the device button, so the chosen connection method is not permanently fixed. This flexibility is particularly useful during installation. The sensor can be configured and tested through Bluetooth before being moved into a Zigbee-based smart-home environment. Users are not forced to purchase the device in separate Bluetooth and Zigbee versions or commit to a single ecosystem before determining how it will ultimately be used. Actual compatibility will depend on the Zigbee coordinator, hub and software platform, so advanced users should still verify support for their specific environment. LinknLink’s own ecosystem and Home Assistant integration provide the most direct path to the full collection of sensor entities.
Home Assistant is where the eMotion Air becomes substantially more capable than a standalone wireless sensor. The integration exposes presence, temperature, humidity, brightness and button entities, allowing each function to be used independently inside automations, dashboards and historical logs. The local-control approach is especially attractive. Presence automations are time-sensitive, and relying on a remote cloud service can introduce unnecessary latency or service dependency. With local Home Assistant control, the sensor data can be processed inside the home network, resulting in faster responses and a more private automation environment. I found the available entities suitable for creating multi-condition routines rather than simple one-action triggers. A living-room automation, for example, can check whether presence has been detected, whether the room is dark and whether the television is active before selecting the appropriate lighting scene. A home-office routine can keep lights and climate control active while someone remains seated, then wait for a defined absence period before turning devices off. The delay is useful because it avoids abrupt changes if the user briefly leaves the room. The smart button adds another useful layer. Single-, double- and long-press actions can be assigned to separate Home Assistant functions, effectively turning the sensor into a three-command wall controller. I used this concept to separate routine actions such as toggling the main light, activating a scene and switching off multiple devices. LinknLink also promotes relatively quick MQTT-based Home Assistant configuration through its Motion2MQTT integration. This is potentially helpful for users comfortable with MQTT who want direct local access without constructing a complicated custom configuration manually.
The eMotion Air proved most useful when several of its functions were combined. In a home office, presence detection kept the workspace active while I remained seated, while the brightness sensor prevented the lights from switching on unnecessarily during daylight. Temperature information could then be used to activate a fan or climate routine only when the office was occupied. In the living room, the sensor was better suited than a basic motion detector to long periods of television viewing. Once someone sat down, very little movement was required, yet the occupancy state could remain active and prevent the lighting scene from ending too soon. For a bedroom, the battery-powered format was particularly convenient because the sensor could be mounted without running another visible cable beside the bed. The smart button could then be assigned to a night scene, reading light or all-off routine. The same principle applies to rental properties and temporary smart-home installations. Because no permanent wiring is required, the eMotion Air can be removed or repositioned without leaving behind a complicated installation. It can also be used in hallways, storage areas and utility rooms, although a less expensive PIR sensor may still be sufficient for spaces where occupants are always moving. The eMotion Air delivers its greatest value in rooms where stationary presence must be recognised reliably.
Across repeated daily-use scenarios, the main benefit of the eMotion Air was not a dramatic new automation feature, but the reduction of small failures that normally make a smart home feel unreliable. Lights remained active while a room was occupied. Climate routines could respond to both presence and environmental conditions. The physical button provided a quick manual override without requiring a phone. Most importantly, the battery-powered enclosure allowed the sensor to be placed where its detection pattern was useful rather than where a power socket happened to be available. The use of standard AAA batteries also simplifies maintenance. Rechargeable integrated batteries can eventually degrade and require the entire device to be removed for charging, while AAA cells can be replaced immediately. Whether the sensor achieves the complete advertised 18-month operating time will depend on configuration and use, but the overall power strategy is more practical than regularly charging another smart-home accessory. The sensor’s greatest requirement is thoughtful installation. Radar sensing can detect movements that a PIR device ignores, but that sensitivity means the user should spend time adjusting placement and automation delays. Once that initial tuning is complete, the eMotion Air becomes considerably less intrusive in daily use. The hardware itself remained discreet and easy to maintain. Its smooth front surface can be wiped clean, the batteries are accessible from the rear and the mounting system allows the unit to be removed without dismantling the entire bracket.
The LinknLink eMotion Air is one of the more practical implementations of battery-powered mmWave presence sensing I have tested. Its combination of 24GHz radar detection, temperature, humidity and ambient-light monitoring, programmable button controls and dual Bluetooth/Zigbee connectivity gives it considerably more versatility than a conventional wireless motion sensor. Its strongest feature is installation freedom. I could place it in bedrooms, offices, living rooms and temporary smart-home layouts without searching for a nearby outlet or adding another visible power cable. The supplied mounting options made it straightforward to test different positions, while the compact white enclosure remained suitably discreet. Presence detection is most valuable in situations where someone remains relatively still, and this is precisely where the eMotion Air provides a meaningful upgrade over PIR technology. It allows lighting and climate automations to respond to real occupancy rather than occasional large movements. Home Assistant users will obtain the fullest experience, including local control, access to all sensor entities, MQTT integration, detailed automation conditions and programmable button actions. The LinknLink app adds accessible controls, locally stored historical data, CSV export and promising AI-assisted automation tools, although the software side will continue to benefit from further refinement. The eMotion Air is therefore not the cheapest or simplest choice for every corridor or storage room. For spaces where accurate stationary presence detection matters and wired installation is impractical, however, it is a thoughtfully designed, feature-rich and genuinely useful smart-home sensor that can make everyday automation feel considerably more dependable.
LinknLink eMotion Air Main Features
– Battery-powered placement: test presence automation in bedrooms, offices, and rental rooms without opening walls.
– mmWave presence detection: detect subtle occupancy for scenes where motion sensors often turn off too early.
– Home Assistant room automation: use presence data to coordinate lights, comfort, and energy-saving routines.
– Truly wireless battery powered with long-lasting performance. Install anywhere and maintain with ease. eMotion Air uses 3xAAA batteries for a 1.5-year lifespan. Enjoy fast, accurate 24G radar detection with industry-leading efficiency.
– Install it anywhere with total flexibility. Ultra-thin and versatile, eMotion Air supports magnetic, adhesive, or screw mounting. For maximum coverage, use the 90° corner bracket for neat corner mounting or as a tabletop stand.
– Dual Connectivity. Use Bluetooth for instant phone setup or Zigbee 3.0 for broad hub compatibility and faster response.
– Easy Switching. No need to choose — simply long-press the button to switch between modes anytime.
– 24G radar sensor for accurate person detection. Upgrade from PIR to precision. eMotion Air’s mmWave sensor detects micro-movements others miss. Sit still on the sofa – your lights stay on.
– Real-time temperature, humidity & light sensing. eMotion Air monitors temp, humidity, and light to automate your climate and lighting for zero-effort comfort. Let your home adjust itself to your perfect settings.
Real-life scenarios where LinknLink eMotion Air can be quite useful
– Home Office Productivity. Keep lights, air conditioning, or a desk fan running while you’re sitting and working. The 24GHz mmWave radar detects subtle movements like typing, preventing lights from switching off during long work sessions.
– Movie Nights in the Living Room. Watch films without interruption. Unlike traditional PIR sensors, eMotion Air continues detecting your presence while you’re sitting quietly on the sofa, ensuring your lighting scene stays active.
– Smart Bedroom Automation. Mount the sensor beside your bed to detect occupancy while sleeping. Automatically activate nighttime lighting, adjust the thermostat, close curtains, or trigger a “Good Night” scene with the built-in smart button.
– Energy-Efficient Climate Control. Combine presence, temperature, and humidity readings to run heating, cooling, fans, or humidifiers only when someone is actually in the room, reducing unnecessary energy consumption.
– Intelligent Lighting Control. Use the ambient light sensor together with presence detection so lights only turn on when the room is occupied and natural light is insufficient.
– Rental Apartments & Temporary Homes. Thanks to its battery-powered design and adhesive or magnetic mounting, install the sensor without drilling holes or running power cables—perfect for renters or temporary smart-home setups.
– Reading Corner or Study Room. Enjoy uninterrupted reading sessions. Even while remaining nearly motionless, the sensor keeps the reading light on until you actually leave the room.
– Gaming Room Automation. Automatically activate gaming lights, RGB effects, cooling fans, or entertainment equipment when you enter, while maintaining the scene throughout long gaming sessions without false “room empty” detections.
– Home Assistant Smart Scenes. Create advanced automations that combine presence, brightness, temperature, humidity, and button presses to build highly personalized scenes for work, relaxation, entertainment, or bedtime.
– Quick Scene Control with the Smart Button. Use the integrated programmable button to toggle lights, activate a favorite scene, control media playback, or turn off multiple smart devices with single-, double-, or long-press actions.
– Flexible Testing & Room Optimization. Experiment with different mounting positions before permanently installing the sensor. The wireless design and adjustable bracket make it easy to optimize radar coverage for maximum detection accuracy.
– Whole-Home Comfort Monitoring. Monitor temperature, humidity, and light levels throughout your home while storing historical data locally. Export the collected data for analysis or use it to fine-tune your smart-home automations over time.
LinknLink eMotion Air Highlights
Truly wireless battery-powered design with up to 18 months of battery life (3× AAA)
Advanced 24GHz mmWave radar for precise human presence detection
Detects subtle movements, including breathing and seated occupancy
Real-time temperature, humidity, and ambient light monitoring
Built-in smart button supporting single, double, and long press actions
Dual connectivity with Bluetooth and Zigbee 3.0
Easily switch between Bluetooth and Zigbee with a long button press
Compatible with Home Assistant, Amazon Alexa, and Google Home
Local automation with MQTT support for Home Assistant
Historical sensor data with local storage and CSV export
Flexible installation using magnetic, adhesive, screw, or corner mounting
Adjustable 90° mounting bracket doubles as a tabletop stand
Compact, minimalist design that blends into any room
Ideal for smart lighting, climate control, occupancy detection, and energy-saving automations
Perfect for bedrooms, living rooms, home offices, rental properties, and other cable-free installations
LinknLink eMotion Air Specs
Brand: LinknLink
Product: eMotion Air
Product name: Presence Sensor
Sensor type: 24GHz mmWave presence sensor
Detected signals: Presence, light, temperature, humidity, and button actions
Button actions: Single press, double press, and long press
Connectivity: Bluetooth and Zigbee 3.0
Power: 3xAAA batteries
Battery life: Up to 1.5 years, depending on settings and usage
Mounting: Magnetic mount, adhesive mount, screw mount, 90-degree corner bracket, or tabletop placement
Smart platforms: Alexa, Google Home, and Home Assistant
Local automation: Home Assistant access to presence, climate, light, and button entities
Data handling: Sensor history can be backed up or exported to CSV
Color: White
EAN: 6975318230569
FCC ID: 2A9BE-LL8258
LinknLink mobile application
LinknLink’s redesigned application accompanies the eMotion Air and introduces a more ambitious approach to smart-home management. In addition to conventional device controls and historical information, the new app incorporates AI-assisted features intended to simplify automation creation. These include natural-language device control, AI-generated automation suggestions and general smart-home assistance. The concept is promising because one of the largest obstacles in home automation is not hardware installation, but converting a user’s intention into a reliable set of triggers, conditions and actions. Instead of manually navigating through multiple menus, a user could describe a routine such as keeping the office light active while someone is present but only when the room is dark. An AI assistant can then help translate that request into an automation structure. I would still review every AI-generated routine before enabling it, particularly when it controls heating equipment, security-related devices or appliances with meaningful power consumption. AI assistance is most useful as a configuration tool rather than an unquestioned decision-maker. The redesigned interface makes the sensor’s presence history and environmental data easier to understand, while local storage gives users more control over their information. Historical records can be exported as CSV files, which is useful for analysing occupancy patterns, temperature changes or humidity trends over longer periods. Because the application was being introduced through TestFlight on iOS and a separate Android installation package during the evaluation period, some elements should still be regarded as evolving software rather than a completely finalised platform. The underlying direction is nevertheless encouraging, particularly for users who find traditional automation editors unnecessarily technical.
Download LinknLink application for free from Google Play Store or App Store.
Package Content
1 x LinknLink eMotion Air
1 x Wall-mounting bracket
12 x Luminous Scene icon sticker
1 x Quick Setup Guide
1 x Transparent adhesive mounting Nano Tape
1 x Packaging Box
Photo gallery full album here. Read more about LinknLink here. Official website here.
About LinknLink. LinknLink is an IoT platform company that specializes in IoT and AIOT technologies. We are committed to providing comprehensive digital solutions for retail enterprises, helping customers optimize business processes, improve operational efficiency, and achieve digital transformation.
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