This water heating switch supports Wifi and BLE two wireless communication technologies, connecting to the network faster, which allows the device to be used more flexibly to meet different usage 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 Alexa and Google Home for free voice control of your connected devices for added convenience. Features: Wifi+BLE Dual Mode: It supports two wireless communication technologies, Wi-Fi and BLE, and connects to the network faster, giving you more flexibility to use the device in different ways. 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 Alexa and Google Home for free 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 Switch Material: ABS Color: black, white (optional) Model: 20A, 40A (optional) Power rating: 4000W (20A), 8000W (40A) Wireless Standards: WIFI+ BLE 2.4GHz 802.11 b/g/n Input Voltage: 100-240VAC 50/60Hz Buttonlife: 100000times Control method: APP Control/Voice Control Operating temperature: -20 to 50 Item size: 86 * 86 * 39mm / 3.39 * 3.39 * 1.54in Package size: 106 * 105 * 51mm / 4.17 * 4.13 * 2.01in Package weight: 150g / 5.29ounce Packing List: 1 * Water Heater Switch