The Sonoff 4CHR3 is a Wi-Fi smart switch designed to manage four separate electrical circuits from a single device. It connects to your home network via 2.4GHz Wi-Fi, allowing you to control each of the four relays independently through the eWeLink app on Android or iOS devices, or by using voice commands with Amazon Alexa and Google Assistant. Built from fire-resistant PC, this white module measures 145 x 90 x 34 mm and weighs 228 g. It handles an input voltage of 100-240V AC with a maximum total current of 16A, providing up to 10A per individual gang and a total power capacity of 2200 W. For those who prefer tactile interaction, the device includes physical buttons for manual control. This switch is versatile enough for various interior setups thanks to its three operating modes: self-locking, interlock, and inching. These options make it a practical choice for users who need to automate lighting or small appliances while maintaining the flexibility of manual overrides.