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Overview
The 4CH Pro R3 switches up to four devices from a panel or enclosure, which makes it a good fit for sprinkler solenoids, garage motors, lights and other household appliances. It can also replace an ageing irrigation controller, with scheduling and separate control for each solenoid.
Because it has a dry contact option, it can act as a smart switch on a line without powering the device through its output. A common 433MHz remote can also operate it without an internet connection.
- At a glance
- Brand
- SONOFF
- Model
- 4CHRPROR3
- Connects with
- Wi-Fi
- Channels
- four relays
- Relay voltage
- 7–240V AC, 7–32V DC
- Maximum load
- 10A (2200W) per channel, 40A (8800W) total
What it does
Three control modes
self-locking for independent control, interlock so one device on means the rest switch off, and inching for timed pulses from 0.5 to 3600 seconds.
Dry contact option
switch a line on and off without passing power through the relay.
433MHz RF control
operate with a standard remote even when the internet is down.
DIN-rail mounting
installs neatly and reaches devices far from the switch.
Voice control
works with Amazon Echo devices and Google Home.
Specifications
From the manufacturer's data. Check the label on the device if your installation depends on a rating.
| Channels | four relays |
|---|---|
| Relay voltage | 7–240V AC, 7–32V DC |
| Maximum load | 10A (2200W) per channel, 40A (8800W) total |
| Wi-Fi | 2.4GHz, IEEE 802.11 b/g/n, WPA/WPA2 security |
| Casing | PC V0 |
| Dimensions | 145 × 90 × 34 mm |
| Operating temperature | -10°C to 40°C |
| Operating humidity | 5–95% RH, non-condensing |
Before you install
- A neutral wire is required.
- A 2.4GHz Wi-Fi network and an internet connection are needed for app and voice control.
- Anything wired into mains power should be fitted by a qualified electrician.
