[Wifi+Bluetooth Dual Mode] Connect faster with dual-mode technology. Connection speed is 2 times faster than Wi-Fi-only models (available on Wi-Fi models; not available on Zigbee models). [40A] Suitable for air conditioners and other high-power equipment. Please observe the maximum power rating. [Requires Neutral Wire] Requires a neutral wire for installation. Ensures higher safety and stable performance. [Offline Function] When the device is offline, the app will notify after 30 minutes. [APP Remote Control] Control the switch anytime, anywhere via the mobile app. [Voice Control] Works with Alexa and Google Assistant, Tmall Genie. [Set Timing] Turn connected devices on or off at scheduled times. Schedule your living room fan to turn on in the morning, or set children's lights to turn off at bedtime. [3 Restart Modes] Choose from default ON, default OFF, or memory mode. [Backlight Option] Adjust backlight settings so switching lights wont disturb rest (available on Wi-Fi models; not available on Zigbee models). [Family Sharing Function] Create a smart home environment with family members. [Sharing Function] Share device control with family members for joint use. [Group Function] Control multiple devices in a groupturn them on or off together for added convenience. EU Product Dimensions: 86 x 86 x 35mm Wi-Fi Standard: 2.4GHz 802.11b/g Panel Material: Tempered glass Rated Current: 40A Input Voltage: AC220V, 50/60Hz Color: White Material: ABS Package Contents: 1 x Water heater switch Only the above items included; other products not included. Note: Lighting and display differences may cause slight color variation between image and actual item. Measurement tolerance: +/- 1-3cm.