The AQARA Light Switch H2 Horizontal is a horizontally mounted wall switch with 2 buttons and 1 channel, adding a modern touch to your smart home system. It supports Thread, Zigbee, and Bluetooth wireless protocols, offering future-proof compatibility with Matter ecosystems while allowing full use of advanced features via an Aqara Zigbee hub. Its flexibility to work with or without a neutral wire simplifies installation and adapts to your existing wiring. A key technical highlight is real-time power monitoring, activated when connected to a neutral wire, enabling you to track energy consumption of connected lighting circuits daily, weekly, monthly, or yearly through the Aqara Home app and create efficiency-focused automations. It also offers advanced controls such as Power-Off Memory, which restores the device's last state after a power outage, and Decoupled Switch Mode, which decouples the relay from the button, allowing the buttons to be used as wireless triggers. This switch is ideal for users who want to control a single lighting circuit from two different locations. With 3-Way (2-Way) control support, it smartens your traditional switches without losing the existing two-way functionality. Additionally, MARS Tech technology ensures that when smart bulbs are used, the bulbs remain connected even when the switch is off, allowing uninterrupted control via automation and voice commands. Technical Specifications: - Model: WS-K12D - Wireless Protocols: Thread, Zigbee, Bluetooth - Dimensions: 119 × 86 × 42 mm - Operating Temperature: 0°C ~ 40°C - Operating Humidity: 0% ~ 95% RH, non-condensing - Electrical Ratings: 110-240 VAC, 50/60 Hz, Max. 10 A (Resistive Load) - Minimum Power: 5W (without neutral), Unlimited (with neutral) - Number of Buttons: 2 - Number of Channels: 1 - Power Monitoring: Yes (with neutral connection)