It is an intelligent pass-breaker with voice control function, which is compatible with multiple language settings; and it has various functions, such as sharing function, group function, which can be used by multiple people or multiple software at the same time. Your time and energy will not be wasted due to its simple and convenient operation. And it will be very reliable and practical to use through its multifunctional feature. Made of high-quality ABS and PC fireproof material, it is safe to use. The length and the width are both 4.2cm, and the height is 2cm. It works for Alexa, for Google Assistant supported devices. Item Name: Smart Switch Material: ABS, PC Fireproof Material Maximum Current: 16A Input Voltage: 100-240V 50/60HZ Wifi Type: 2.4GHZ 802.11b/g/n Operating Temperature: -20 Degrees Celsius -50 Degrees Celsius Features: Voice Control, Bluetooth-Compatible, Share Function Size Details: 4.2cm x 4.2cm x 2cm/1.65" x 1.65" x 0.79" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Smart Switch