Revolutionary, patent-pending design – QuickFit and SimpleWire technologies offer groundbreaking home automation features. Unique advancements make the smart controls easier to install and more reliable than ever..QuickFit – Improved components reduced the housing depth by up to 20% compared to previous Zigbee models and eliminated the need for break-off tabs. QuickFit enhancements are the ideal smart solution for older-style switch boxes, multi-gang configurations or any other application with limited space..SimpleWire – Auto-detecting line/load terminals support fast installation by identifying line and load wires and configuring the switch accordingly. Dual ground ports, which are offset to avoid switch box mounting screws, support daisy-chaining in multi-switch setups..Voice control – Pair directly with 1st and 2nd generation Echo Plus, Echo Show 10, or Echo Studio immediately out of the package for easy voice command of connected devices. No additional equipment is required for use with these Echo models. Other Amazon Alexa and Google Assistant products can also be used for voice control when connected through a compatible Zigbee hub..Energy monitoring – Stay informed of energy use when paired with a compatible hub. Energy-monitoring readings and functions vary based on hub capabilities.