needs. After downloading the mobileohne APP, you can control the switch whenever and wherever you want via the mobilephone APP. Whether you are on vacation, at work, or at home, you can enjoy the convenience of everydaylife via the mobilephone app. Compatible with and Google Home for voice control of your connected devices for added convenience.20A and 40A Optional: It can be used for 20A or 40A water heaters, air conditioners, and other high-power devices, you can choose according to your needs. High-power products are safer and more stable.APP Control: After downloading the mobileohne APP, you can control the switch whenever and wherever you want via the mobilephone APP. Whether you are on vacation, at work, or at home, you can enjoy the convenience of the mobilephone APP.Timer Function: With intelligent timer function, your intelligent home experience will be greatly maximized.Hands-free Voice Control: Compatible with and Google Home for voice control of your connected devices for added convenience.Wide Applications: Cool and fantastic tech design that makes your dailylife so much easier with a simple clicking on your smartphone, making your home smarter. It can be used in your home, office, hotel and so on.Specifications:Name: Water Heater SwitchMaterial: ABSColor: black, white (optional)Model: 20A, 40A (optional)Power: 4000W(20A), 8000W(40A)Wireless Standards: WIFI+ BLE 2.4GHz 802.11 b/g/nInput Voltage: 100-240VAC 50/60HzButtonlife: 100000timesControl method: APP Control/Voice ControlOperating temperature: -20 to 50Item size: 86* 86* 39mm/ 3.39* 3.39* 1.54inPackage size: 106* 105* 51mm/ 4.17* 4.13* 2.01inPackage weight: 150g/ 5.29ouncePacking List:1* Water Heater Switch