NO NEUTRAL WIRE NEEDED- Unlike many other brands, this Smart WiFi Touch switch does not need any neutral wiring hence can be retrofit into any application. VOICE CONTROL- Save yourself the effort of pressing buttons and give your voice command! Activated with the ’ENERJSMART’ skill in Alexa App, voice control of your lights or device switch will make your life easier and worry-free. Compatible with Amazon Echo/Dot/Tap and Google Assistant. TIMING FUNCTION - Schedule the intelligent Wi-Fi light switch to automatically power electronics on and off based on specific time you set; Power saving eliminate wasteful standby power and prevent overcharging and overheating save on your electric bills and extend product life.