Sonoff 4CHPROR3 WiFi + RF relay module with 4 channels and voltage-free contacts
- EAN code: 6920075775815
- Product code: SON-REL-4CHP-R3
- In stock (delivery 1-3 days)
The Sonoff 4CH PRO R3 is Sonoff's top-of-the-range 4-channel smart switching relay, released in July 2020. Equipped with a WiFi and 433MHz RF receiver, it can be remotely controlled via the internet and smartphone, as well as locally with an RF remote control.
Original price was: 43,07 €.32,30 €Current price is: 32,30 €.
The Sonoff 4CH PRO offers extended functionality compared to the standard Sonoff 4-channel smart relay, version "R3" is the updated version in July 2020 with additional features compared to the previous version 4CH Pro R2.
It is a WiFi-enabled smart relay module that allows remote control four electrical circuits (channels). The device can be controlled over the internet using the free eWeLink app for iOS or Android, and timed on/off switching is also possible. The relay can be shared with other household members via the app. The perfect solution for smart control of devices that don't need to be used all the time (e.g. air pumps for aquariums).
Sonoff 4CH Pro R3 is a four-channel DIY Wi-Fi smart relay module designed to integrate smart control into existing electrical installations. It allows control of 230V AC, 24V AC and DC devices (motors, sockets, lights, etc.).
It also supports 433 MHz RF controlwhich means it can also be controlled locally with the Sonoff RF remote control. The relay supports 3 modes of operation: self-lock, interlock and inching. The novelty of the R3 version is that all these modes can be configure directly in the eWeLink app, without mechanical settings on the device as in the previous version.
Example: with pulse mode you can trigger the door to open (and the relay will switch itself off after 1 second), and with mutual exclusion, when one channel is switched on, the others will automatically switch off - ideal for motors. The device can also be mounted on DIN rail.
Comparison of Sonoff 4CH Pro R3 vs. R2:
- Increased RF support: R3 allows connection to up to 4 RF remote controls (R2 supported only one)
- Inching (pulse) mode configurable in the app (time between 0.5 and 3600 sec.), instead of physical jumpers (1-16 sec.)
- Interlock and self-locking mode configurable in the application (in R2 only with switches)
- More stable cable connection with screw terminals
- Higher capacity: up to 10A/2200W per channel, up to 40A/8800W total
Device features:
- Remote on/off - via the eWeLink app
- 4 independent channels - 4 circuit control
- Impulse mode - Time-limited switch-on (0.5 s - 3600 s)
- Interlock mode - AC/DC motor control
- Support for NO/NC contacts
- Dry contact (voltage-free output)
- DIN rail mounting
- Physical switches for each channel
- eWeLink app (iOS, Android)
- Status display (ON/OFF) in the app
- Timers - single, repetitive, counting
- Common use - multi-user management
- Scene - group switching on/off of devices
- Clever scenes - activation based on other sensors (temperature, humidity)
- Compatibility: Amazon Alexa, Google Assistant, IFTTT, Google Nest
Relay operating modes:
Power and connection diagrams:
230V AC power supply:
Power supply 5-24V DC:
Connecting outlets for 230V sockets and luminaires:
Connection for AC motors (e.g. garage doors):
Connection for DC motors:
