SONOFF 4CHPROR3 – 4‑Gang WiFi Smart Relay Switch Module (AC/DC 9–240 V) with Inching / Self‑Lock / Interlock Modes, App, Alexa & Google Control

Operation Modes First

• Highlights "Self-Lock/Interlock/Inch Modes" upfront (unique feature)

• Specifies "4 Gang Relay" (critical for multi-device control)

Smart Control Features

• "App Control & Scheduling" (core functionality)

• "Works with Alexa/Google Home" (voice integration)

Technical Specifications

• "AC/DC Voltage (9-240V)" (wide compatibility)

• Removed redundant "remote control" (implied by "App Control")

Character Count: 182/200 (optimal)


 

SONOFF 4CHR3 & 4CHPROR3 are both 4-gang Wi-Fi Smart Switches designed to give you the ability to integrate smart control into your existing home to enable a smart home. Each smart switch has 4 gangs that can be used to control lights and other home appliances at the same time in four areas of your home. There is a major difference between 4CHR3 and 4CHPROR3, which is 4CHPROR3 is designed with an additional function for RF control. The function is purposely adopted to make you turn on/off the device connected with 4CHPROR3 via the RM433 remote controller.

Actually, SONOFF has ever released two types of 4-gang smart switch (4CHR2 and 4CHPROR2.) which comes with almost same functions with 4CHR3 and 4CHPROR3. But all the above units are still different in 3 working modes including self-locking, interlock and inching mode. The new improvement on 4CHR3 and 4CHPROR3 compared with 4CHPR2 and 4CHPROR2 is for users to set these 3 working modes on eWeLink APP instead of the hardware itself, easier to operate. So 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). For the device away from the switch, you can create a moveable space in virtue of a DIN rail to make them be connected. Simply activate devices through your voice when the switch works with Alexa and Google Home smart assistant. mart assistant.

Features

• Remotely control connected lights or devices via APP
• 3 working modes with self-locking, interlock and inching mode for even remote control garage door and roller blinds
• Support scheduling a timer to make devices automatically start and stop to work
• Customize smart scenes to make the device connected with the switch to trigger other devices
• Share the control permission of devices to other accounts to control together
• Check real-time ON/OFF status of devices on your mobile phone
• Power on state allows users to set the On/Off/Keep status for the connected dev