What's in the box:

SONOFF 4CH R3/PRO R3 ITEAD RF 433MHz 4 Gang WiFI Switch 3 Working Modes Inching/Self-Locking/Interlock WiFi Smart Switch Compatible with Amazon Alexa & for Google Home/Nest Smart Home (Standard)

Note: If you want to control the device by remote controller indoors, you need to buy an extra 433MHz RF remote controller.

Features:
*App Support: Free iOS and for Android mobile App eWeLink.
*Sync Status: Real-time device status provided to App.
*Remote ON/OFF: Turn 4 electrical devices on/off remotely from anywhere.
*Independent control: Control each gang separately in APP eWeLink.
*Remote Control: Supports controlled by 433MHz RF Remote Controller.
*3 Working Modes: Supports switching among inching/interlock/self-locking modes.
*Timing: Supports 8 enabled countdown/single/repeat timing tasks to turn on/off at specified time.
*DIN Rail Mounted: Great for industrial control.
*Voice Control: Compatible perfectly with Amazon Alexa, for Google Home, for Google Nest.
*Share Control: Control your smart home together with your family.

Specifications:
Power Supply: 90V~250V AC
Max. Current: 10A/gang, 16A/Total
Max. Power: 2200W/gang, 3500W/Total
Operating Temperature(recommended): 0C-40C
Operating Humidity: 5%-90%RH, Non-condensing
Transmission mode: Wi-Fi 2.4GHz communication
Wireless Standard: 802.11 b/g/n & 433MHz
Security Mechanism: WPA-PSK/WPA2-PSK
Enclosure Material: Fire-retardant ABS V0
Gang: 4
Product Size: 145*90*34 (mm)

Package Information:
Package Size: Approx. 14.8*9.5*4.5cm/5.83*3.74*1.77in
Package Weight: Approx. 233g/8.22oz

Packing List:
1 * Sonoff 4CH Pro R3 ITEAD
1 * User Manual