SONOFF 4CH R3 is a 4-channel smart switch with which you can automate your home and control 4 electrical devices together or separately with the eWeLink app or voice with Amazon Alexa or Google Assistant. Set the desired timers by selecting the countdown, schedule, or loop timer. Create a variety of scenes, group devices by turning on / off multiple devices in your home with a single tap or at a set scene time. Link your eWeLink application to the IFTTT app and expand your scripting capabilities. Share Wi-Fi control with an unlimited number of users. The device allows you to configure LAN control without a cloud server like Home Assistant, openHAB, ioBroker and etc.

The new improvement on 4CHR3 and 4CHPROR3 compared with 4CHPR2 and 4CHPROR2 is for users to set these 3 working modes as self-locking, interlock and inching mode is configured on eWeLink APP instead of the hardware itself, so it becomes easier to operate. You can enable self-locking mode to turn on/off 4 connected devices separately, interlock mode to turn on 1 connected device every time and turn off the rest of devices simultaneously and inching mode to turn on 1 connected device and then make it turn off automatically after a given time (0.5 - 3600s).

The difference between the Sonoff 4CHR3 and the Sonoff 4CHPROR3 is defined by the fact that only the 4CHPROR3 can be additionally controlled by a radio frequency remote control. Also the voltage of this version is 100-240V AC and 9-23V DC and the relays themselves (4pcs) can be powered by any voltage or used as switches.

Functions:

• Control your electrical appliances remotely with "eWeLink" application
• Turn on / off your devices by voice with "Amazon Alexa" or "Google Assistant"
• Switch the devices on / off with the RF 433MHz remote control
• Smartly control electrical appliances or lighting of different voltages
• Set needed type of timer for automatic switching on / off
• Create the scenes you want, group different electrical devices and turn them on with one-touch
• Use sunrise/sunset for scenes set
• Monitor device on/off history
• Share device control with an unlimited number of users
• See device status in real-time
• Connect a Sonoff camera and monitor your home
• Enjoy with the automatical reset of your settings when electricity is gone
• Create smart scenes and unlock more with IFTTT
• Use LAN mode
• Use inching mode
• Control 4 different devices both together or separately
• Turn on 1 connected device every time and turn off the rest of devices simultaneously

Technical specifications:

Voltage Range: 100-240V AC, 50/60Hz(DC 9-23V)
Max. Load: 10A/2200W/Gang 40A/8800W/Total
Wireless Frequency: WiFi 2.4GHz
Wireless Standard: IEEE802.11 b/g/n 2.4GHz2.4GHz(2400M-2483.5M);&nbsp
Security Mechanism: WPA/WPA2
Enclosure Material: PCV0
Gang: 4
Dimension:145*90*34 (mm)
Operating Temperature(recommended): -10ºC-40ºC(14°F-104°F)
Operating Humidity: 5%-95%RH, Non-condensing