The Aqara Light Switch H2 Horizontal (WS-K14D) offers comprehensive lighting control for your smart home with 4 buttons and 3 channels. Compatible with both neutral and no-neutral wiring, this switch supports Thread, Zigbee, and Bluetooth wireless protocols. With dual protocol support, you can use it in Zigbee mode within the Aqara Home ecosystem or connect it to Matter-compatible platforms via Thread for a future-proof experience. A key technical feature is real-time power monitoring, activated when connected with a neutral wire, allowing you to track real-time and historical energy consumption of connected lights through the Aqara Home app and create energy-saving automations. The power-off memory feature remembers the last state of the device after a power outage, preventing lights from turning on unexpectedly or restoring their previous state. MARS Tech technology ensures that smart bulbs remain connected and synchronized even when the switch is off. This model is ideal for large areas such as living rooms, kitchens, or offices requiring multi-circuit lighting management. With 4 buttons, you can independently control 3 lighting channels and use the remaining button wirelessly to trigger automations like curtains, outlets, or scenes. Decoupled mode allows you to assign single, double, and long press commands independent of the relay, turning one switch into a powerful controller for your entire home. Technical Specifications: - Model: WS-K14D - 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 (No Neutral), Unlimited (With Neutral) - Number of Channels: 3 - Number of Buttons: 4 - Power Monitoring: Yes (with neutral connection) - Power-Off Memory: Yes - Package Contents: Switch, Declaration of Conformity, User Manual, Screw Set, Nut Set, Cable Label