The Aqara Light Switch H2 (WS-K080) is a versatile smart wall switch designed to integrate seamlessly into your home automation. It features a four-button, two-channel configuration in a clean white finish, allowing you to control multiple lighting circuits from a single point. This model is particularly flexible regarding installation, as it supports both neutral and no-neutral wiring, meaning you can fit it into older homes without dedicated neutral wires or use the neutral connection to enable power consumption monitoring. Connectivity is a core strength of this device, as it supports Matter over Thread, Zigbee, and Bluetooth. While it works with an Aqara Zigbee hub, its Matter compatibility allows it to communicate across various platforms including Apple Home, Alexa, Google Home, SmartThings, Home Assistant, and Homey. A standout technical feature is the MARS technology, which ensures your smart bulbs remain reachable and online even when the physical switch is turned off, preventing the common issue of disconnected smart lights. Measuring 86 x 86 x 45 mm and weighing 192 g, the switch is built for durability and safety with integrated overheat and overload protection. It is designed to fit standard System 55 frames, such as those from Gira or Merten, making it easy to match with your existing interior hardware. Whether you are building a complex smart ecosystem or simply want a more reliable way to manage your lights, this switch provides a stable bridge between physical control and digital automation.