Energy monitor feature helps you to control your energy consumption and be more energy efficient. ENER-J’s smart plug works with Amazon Alexa/Echo, Google Home/Assistant, with voice control directly. No hub required. Features and Benefits No Hub Required - Works with any Wi-Fi router without the need for a separate hub or paid subscription service. Remote Access - Control devices connected to the Smart Plug wherever you use the free ENERJSMART app on your smartphone (Android 4.1 or higher/iOS 8 or higher). Energy Monitoring - Analyse a device’s real-time and historical power consumption. Scheduling and Away Mode - Schedule the smart plug to automatically power electronics on and off; And turns your devices on and off at different times to give the appearance that someone is home. Specifications Length of Guarantee: 24 months Color: White Product Dimensions: H11 x W7 x D6.3cm Weight: 134g Material: PC Voltage range: 90-250V AC Max current: 16A Wireless frequency: 2.412 - 2.484GHz Wireless IEEE standards: IEEE802.11b/g/n Security type: WEP61/WEP/128/TKIP/CCMP(AES) Security mechanism: WEP/WPA-PSK/WPA2-PSK Wireless consuming: ≤qslant;0.3W Working condition: Temp: -20°C - 60°C humidity: ≤qslant;80%