Sonoff 4CH R2 and 4CH Pro R2 are two models of sonoff 4CH products. although these two products are both 4-gang switches that can control 4 electrical appliances and offer greater performance, the way they work is a bit different.
This article is to tell the differences to 4CH R2 and 4CH Pro R2 which can help you make the right choice of products for your home.
Common Features of 4CH R2 and 4CH Pro R2:
Remote control 4 devices separately with WIFI
Free iOS and Android mobile App eWeLink
DIN Rail Mounted– Great for industrial control
Real-time device status provided to App
Control your smart home together with your family
Set scheduled/countdown timers to turn on/off at specified time
Turn on/off a gang of devices with one tap
Triggered on/off by temp, hum or other environmental conditions from sensor
Works perfectly with Amazon Alexa, Google Assistant, IFTTT, Google Nest
Key difference between 4CH R2 and 4CH Pro R2:
The Sonoff 4CH Pro R2 supports switching among 3 working modes: interlock/self-locking/inching mode while Sonoff 4CH R2 doesn't support
The Sonoff 4CH Pro R2 supports RF Remote while Sonoff 4CH R2 doesn't support
Let's take a look at the specifications of both devices that make comparison more intuitive:
Appearance |  |  |
Size | 145*90*40mm | 145*90*40mm |
Weight | 250g | 350g |
Voltage Range | 90-250V AC (50/60HZ) | 90-250V AC (50/60HZ)/5-24V DC |
Max Current | 10A/gang | 10A/gang |
Max Power | 2200W/gang, 2200W/Total | 2200W/gang |
Wireless Standard | 802.11 b/g/n 2.4GHZ | 802.11 b/g/n 2.4GHZ, 433.92MHZ |
Security | WPA-PSK/WPA2-PSK | WPA-PSK/WPA2-PSK |
Scene | Yes | Yes |
Remote Control | Yes | Yes |
Share Control | Yes | Yes |
LAN Control | No | No |
433MHz RF Remote | No | Yes |
Schedule/Countdown Timer | Yes | Yes |
Channel | 4 Gang | 4 Gang |
Way | 1Way | 2Way |
Loop Timer | No | No |
Interlock/self-locking/inching modes | No | Yes |
DIN Rail | Yes | Yes |
Amazon Alexa | Yes | Yes |
IFTTT | Yes | Yes |
Google Nest | Yes | Yes |
Google Assistant | Yes | Yes |