Sonoff PSF-B-4c

ESP8285 Chip
Ultra-low-power Wi-Fi switch module series based on ESP8285.
4 Gang Switch Control
Used as a switch control for 1-4 household appliances. Either it can be controlled by the device button, or remotely controlled by connecting to APP (eWeLink)
Specially designed for mobile devices and Internet of Things applicationsl
With the most competitive package size and ultra-low energy consumption technology in the industry. PSF-B series connect users’ devices to the Wi-Fi wireless network for remote or local area network communication to achieve networking.
Various packaging methods
Widely used in smart grid, smart transportation, smart home, handheld devices, industrial control and other fields.

What's in the box
1 x SONOFF PSF-B-4C