Shelly i4 Gen4 brings four-input smart automation control to retrofit installations. The new Shelly i4 Gen4 combines four digital inputs with Matter, Wi-Fi, Zigbee and Bluetooth connectivity, giving electrical contractors and integrators a flexible way to add advanced automation behind existing switches and buttons. Shelly has expanded its Gen4 range with the Shelly i4 Gen4, a compact four-input controller designed to turn conventional wall switches and buttons into flexible control points for smart home and building automation. Rather than switching an electrical load directly, the i4 Gen4 detects input from connected switches or buttons and uses those interactions to trigger other devices, scenes and automated workflows. This allows installers to retain familiar physical controls while significantly expanding what those controls can do. A single switch could, for example, trigger an evening scene involving lighting, blinds and heating, while a button positioned by the front door could activate an away routine across multiple devices. In commercial environments, the same approach can be used for opening and closing routines, meeting-room controls or other operational automations. What is new with the i4 Gen4? Building on the Shelly i4 Gen3, the latest generation retains the compact four-input format while adding wider connectivity and integration options. The i4 Gen4 supports Matter, Wi-Fi, Zigbee and Bluetooth, including Wi-Fi 6 and Bluetooth 5.0, alongside an upgraded processor. It can also operate as a Zigbee repeater, Wi-Fi range extender and Bluetooth gateway for Shelly BLU devices. For installers, that wider protocol support provides more choice when designing an automation system. The i4 Gen4 can sit within the Shelly ecosystem or form part of a wider connected environment using compatible third-party platforms and devices. Make more of an existing wall switch. The i4 Gen4 provides four digital inputs, allowing multiple conventional switches or buttons to be connected to one device. Different interactions can then be assigned to different actions, making it possible to give a familiar wall control several functions rather than restricting it to a single load. That can be particularly useful in retrofit projects. Rather than replacing existing switches with dedicated smart control panels, installers can introduce additional functionality behind the existing interface. For homeowners, this means physical switches can remain alongside app, voice and automated control. For contractors and integrators, it creates an opportunity to add automation without significantly changing the appearance or everyday operation of the installation. From individual controls to complete scenes. The value of an input controller becomes clearer when it is used to control several parts of an installation at once. In a residential project, one button could switch off selected lighting, lower blinds and adjust heating as part of a nighttime routine. Another could provide a central "all off" function when leaving the property. In offices, retail, hospitality and other commercial environments, a physical control could trigger a wider opening or closing sequence, change the settings of a meeting room or initiate another predefined workflow. Because the i4 Gen4 acts as the trigger rather than directly switching the loads, the devices being controlled do not need to be located on the same circuit or immediately adjacent to the switch. Open integration and local automation. For more advanced projects, Shelly i4 Gen4 includes an embedded web interface and supports Shelly scripting, MQTT, webhooks, HTTP and HTTPS APIs and KNXnet/IP. This gives electrical contractors, system integrators and advanced users options for connecting the device with wider automation platforms and creating customized workflows. Local control also means automations do not need to rely exclusively on cloud connectivity, an important consideration for installations where response time, reliability or system independence are priorities. Compact design for retrofit projects. Measuring 37 by 42 by 15 millimeters, the i4 Gen4 is designed for installation behind switches and within standard wall boxes. It operates from a 110-240V AC supply and consumes less than 1 watt. Its compact format, combined with four inputs and multi-protocol connectivity, makes it particularly relevant to retrofit projects where contractors want to introduce smarter control while retaining the existing switches and overall appearance of the installation. Shelly i4 Gen4 is available to purchase now for an MRSP of £15.90 from Shelly.com and official Shelly resellers. For full technical specifications, wiring information and product documentation, visit the Shelly i4 Gen4 Knowledge Base. See more from Voltimum on Google Add Voltimum as a preferred source and Google will show its articles more often in your news results.

Shelly unveils Presence Gen4 sensor with Matter & multi-zone tracking. ByPaul Lamkin, Contributor. Paul's a smart home expert and the founder of the Wareable Media Group Oct 15, 2026, 11:00am EDT Sponsored By Summary. Bulgarian smart home specialist Shelly has introduced the Shelly Presence Gen4, a new mmWave smart home presence sensor. The device can track up to 10 people in a room and trigger automations based on specific locations and stationary presence within up to 10 independently configurable zones. It features Wi-Fi, Bluetooth, Zigbee, and Matter connectivity, and requires continuous power through USB-C. Wall mounting provides a 140-degree field of view across spaces up to 650 square feet. The sensor is available now in North America for $84.99. Bulgarian smart home specialist Shelly has unveiled a new smart home presence sensor that can track up to 10 people in a room using mmWave. The Shelly Presence Gen4 can, therefore, trigger automations based on where people are, rather than by simply detecting movement. Conventional motion sensors often switch lights off when someone is sitting still on the sofa, working at a desk or reading in bed because they rely on movement to register occupancy. Shelly's new sensor can detect people who are stationary, then use their location to trigger automations in up to 10 independently configurable zones. MmWave, short for millimeter-wave radar, is increasingly being used in smart home sensors as an alternative to traditional motion detection. Traditional passive infrared (PIR) sensors detect changes in infrared radiation as people move through a space, which means someone sitting still can eventually disappear from the sensor's view. MmWave radars can detect much smaller movements, including subtle movements associated with breathing, so could even tell if someone is in a room, even if they're completely still. Shelly's new sensor maps occupancy within a room, allowing automations to respond to specific areas rather than treating the entire space as one detection zone. For example, you could have your lights turn on around a desk when you sit down to work in the morning, but have your neon lights and speakers fire up in the evening if you move to your gaming rig. You can also set things up like movie time automations when you settle down on the couch after 9pm, or have the coffee machine fire up if you and your partner are both in the kitchen in the morning. Adjustable height thresholds and other sensitivity settings can help filter out pets, robot vacuums and other low-level movement, while a built-in ambient light sensor reports whether conditions are dark, at twilight or bright. Shelly isn't the first smart home brand to explore this type of detection; Aqara has an ever-growing range of presence sensors in its lineup, powered by mmWave and Meross has the MS605 Smart Presence Sensor, which combines a mmWave radar with infrared motion detection and a light sensor. The Prompt: Get the week's biggest AI news on the buzziest companies and boldest breakthroughs, in your inbox. Samsung is also quietly baking mmWave directly into your home, turning everyday appliances like refrigerators, smart TVs, and air conditioners into invisible, room-aware sentinels that track your presence without a single camera lens in sight. Back to Shelly's effort and the Presence Gen4 ticks all the connectivity boxes with Wi-Fi, Bluetooth, Zigbee and Matter all available (not all at the same time), giving it plenty of options for playing nicely with ecosystems such as Apple Home, Google Home, Amazon Alexa, Samsung SmartThings and Home Assistant. Shelly also offers direct local control and custom scripting, allowing more advanced users to build automations without relying on its cloud services. The Gen4 does need continuous power through USB-C (Aqara and Meross have, albeit less powerful, battery options). So you'll have to have it near a power source, but it can be mounted on a wall or in a corner, or placed on a shelf or table using its built-in stand. Coverage depends on where you put it really. Wall mounting provides a 140-degree horizontal field of view across spaces up to 650 square feet, while corner mounting narrows the field to 90 degrees and covers up to 525 square feet. The Shelly Presence Gen4 is available now in North America for $84.99 through Shelly's US store, with availability at retailers including Best Buy, Micro Center, Newegg and Amazon expected soon. Over the past few years, Shelly has quietly turned from an enthusiast/nerd-only brand into one that is much more accessible, allowing regular folk with just a bit of tech savviness to create building blocks that are capable of turning a dumb house into a modern smart home - check out my guide to setting up a Shelly smart home. Shelly has been in the news as of late because France's Schneider Electric is planning a voluntary public takeover offer for the company. If that name sounds familiar it's because Schneider, alongside LG, was one of the brands Apple has teamed up with for its new Home Collection, a new range of smart home accessories designed to work with the revamped Apple Home platform. Less than $2/week.