The Sonoff Basic and Sonoff Mini are both smart home devices made by the company Sonoff. They are both WiFi-enabled and can be controlled remotely through the eWeLink app on your smartphone.

However, there are a few key differences between the two devices. The Sonoff Basic is a larger device that can be used to control a wide range of appliances, including lamps, fans, and other home appliances. It comes with a standard-sized (86mm x 86mm) wall plate that fits over a single gang electrical box.

On the other hand, the Sonoff Mini is a smaller, more compact device that is designed to control smaller appliances, such as lights and outlets. It comes with a smaller (45mm x 23mm) wall plate that can fit into a single gang electrical box or be mounted directly onto a surface using the included mounting screws.

In terms of features, both devices offer the same basic functionality, including the ability to turn appliances on and off remotely and set up timers and schedules. However, the Sonoff Mini has a few additional features, such as the ability to control the device using voice commands through Amazon Alexa and Google Assistant.

Overall, the main difference between the Sonoff Basic and Sonoff Mini is the size and design of the devices, as well as a few additional features on the Mini.