1.Wifi+Bluetooth Dual Mode: Connect to faster. The speed of connecting to is 2 times faster than that of only Wifi 2.20A/40A:Can be used for high-power equipment such as , air conditioners, etc. Note the maximum power. 3.Need Neutral line : Need to have Neutral line to use, high- are and more stable 4.Offline function: When the device is offline, the APP will remind the device to be offline after 30 minutes 5.APP remote control: Control the switch anytime and anywhere through the mobile phone APP 6.Voice Control: Use with and Home, Tmall Genie 7.Set Timing: Turn on and off connected devices at a specified time. Schedule the living room fan to turn on in the morning, or schedule your child's lights to turn off to let them know it's time for bed. 8.3 restart states: default on or off, or memory state 9.Backlight Options: You can set the status of the backlight to that switching the light on and off during rest will not affect the rest 10.Family sharing function: Create a smart home with your family 11.Share function: Share with family members for common control 12.Group function: You can turn off or turn on the devices of the group together, which is more convenient WiFi standard: 2.4GHZ 802.11b/g Rated current: 20A Input voltage: AC110 ~ 240V, 50 / 60hz Colour:White Material:plastic Package Contents: 1 x Tuya Smart Wifi Water Heater Boiler Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.