This mini -designed intelligent WIFI module is suitable for wall switch boxes, which can easily hide it in the hidden wall switch box of traditional switch without affecting your decorative style and make it intelligent. More importantly, your traditional switch and this smart module can work independently in the non -interference mode. The mini WiFi switch is compatible with communication and DC power, the working voltage: AC90-250V 50/60Hz, or DC15-250V. Support 1 or 2 roads (2 switches control 1 lamp); only need to be connected to one of the 2 switches, and convert the connected device with smart devices (for two -way circuit) The Mini WiFi switch is compatible with FOR Amazon Alexa (FOR Amazon Echo/Echo Point/Amazon Click) and Google Family Assistant. It allows you to use voice to control home equipment and enjoy the exemption experience. Use the application to completely control the connected electrical appliances through the timer, timetable and countdown (1/5/30 minutes, 1 hour, etc.); share control with family and friends to increase convenience Use smartphones to control through smart life/Tuya applications without separate hubs. [Note] The router must be 2.4GHz (not supported 5.0 GHz WIFI), but the smartphone network is not limited (2G/3G/4G/WWIFI network is available). Material: plastic colour: As Shown Package Contents: 20 x wifi light 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.