Sonoff 4CH Pro

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Overview

Sonoff 4CH Pro.jpg

Sonoff 4CH Pro is an ESP8285 WiFi module based 4 channel (4-way) WiFi wireless switch. It integrates with MCU ST32F030C6 and 433MHz receiver. Sonoff 4CH Pro supports to connect and control 4 home appliances, which can be separately turned on/off by app eWeLink and 433MHz remote. Users can switch among 3 modes: self-locking mode, inching mode and interlock mode. In self-locking mode, users can turn on/off the 4 connected devices independently. In inching mode, users can turn on connected devices for 0.25-4s. In interlock mode, users can turn on 1 device every time, and turn off other devices at the same time.

The enclosure supports din-rail mount! A DIN rail is a metal rail of a standard type widely used for mounting circuit breakers and industrial control equipment inside equipment racks.

Sonoff 4CH Pro is hacker-friendly! You can flash external firmware!

Go shopping Sonoff 4CH Pro

Features

  • Support independently turn on/off 4 home appliances
  • Support to turn on/off home appliances by local toggle buttons
  • Support tracking device status and remote control through APP
  • Support control by 433MHz remote indoor
  • Support switching among self-locking mode, inching mode and interlock mode
  • Support countdown timer and scheduled timer
  • Support share control

Electrical Characteristics

  • Voltage range: 90-250v AC(50/60Hz) /5-24v DC
  • Max current: 10A/chnl
  • Max Power: 2200W/chnl
  • Wireless Frequency: 2.4Ghz
  • Operating Temperature(recommended): 0ºC-40ºC(32°F-104°F)
  • Operating Humidity: 5%-90%RH, Non-condensing
  • Max soldering temperature: 260℃

Wiring Instruction

L-In: Input LIVE

To enter into WiFi pairing state, you should press and hold one of CH1, CH2, CH3, CH4 buttons until the WiFi LED blinks 3 times repeatedly.

L1,L2,L3,L4 port respectively connects to LIVE of CH1, CH2, CH3, CH4.

You can randomly connects to any of the five N port and 5 GND port for your devices.

WIFI Characteristics

• 802.11 b/g/n

• Built-in 10-bit high accuracy ADC

• Built-in TCP/IP protocol stack

• Built-in TR switch, balun, LNA, power amplifier and matching network

• Built-in PLL, voltage regulator and power supply management components, 802.11b mode +20 dBm output power

• A-MPDU&A-MSDU aggregation and 0.4μs guard interval

• Support antenna diversity

• Built-in ultra-low power 32-bit MCU, also work as application processor

• SDIO 2.0、SPI、UART

• STBC、1x1 MIMO、2x1 MIMO

• WiFi @ 2.4 GHz, supports WPA / WPA2 safe mode

• 2ms, connect and transfer data packets

• Other parameters are as follows

Category Parameters Description
Wireless Parameter Wireless standard 802.11 b/g/n
Frequency range 2.4G-25G(2400M-2483.5M)
Tx Power 802.11b: 20dBm
802.11g: 17dBm
802.11n: 14dBm
Rx Sensitivity 802.11b: (11Mbps)-91dbm
802.11g: (54Mbps)-75dbm
802.11n: (MCS7)-72dbm
Software Parameter Wireless network types Station/softAP/softAP+station
Security WPA/WPA2
Encryption WEP/TKIP/AES
Firmware Upgrade UART Download / OTA (via network)
Network Protocols IPv4、TCP/UDP/HTTP/FTP
User configuration AT+ instruction set

Specification

PCBA Size:122.2*87.2*1.2mm

Product Size: (L)14.5*(W)9.5*(H)4cm

Hardware

Sonoff 4CH Pro hardware-new.png

Working Mode

Sonoff 4CH Pro supports to work 3 modes: self-locking mode, inching mode and interlock mode.

1. In self-locking mode, users can turn on/off the 4 connected devices independently. For example, if users turn on CH1, connected device keeps on. If users turn off CH2, connected device keeps off.

2. In inching mode, users can turn on the connected devices for 0.25-4s. For example, users can turn on CH1 connected device for 1s, then auto-off.

3. In interlock mode, users can turn on 1 device every time, and turn off other devices at the same time. For example, if users have turned on CH2, then when they turn on CH3, CH2 will be auto-turned off at the same time.

We will introduce how to switch among the 3 modes below:

4CH-Pro.jpg

CAUTION: Please cut off power supply before switching S5, S6, K5, K6. Whether you use DC or AC input, make sure you have unplugged the power plug every time!!!

Sonoff 4CH Pro S6 K5.png


S6 is interlock /inching&self-locking switch: Toggle to the right(0), it enters into interlock mode; Toggle to the left(1), it enters into inching &self-locking mode.

K5 is inching/self-locking switches: From left to right, there are 1, 2, 3, 4, correspondingly for channel 1 (CH1), channel 2 (CH2), channel 3 (CH3), channel 4 (CH4). Toggle the switch down (0), the corresponding channel enters into inching mode; Toggle the switch up (1), the corresponding channel enters into self-lockin mode.

  • Please note that if S6 is toggled to the right(0), your 4CH Pro is in interlock mode, it's invalid to set K5.

K6 is used to set the delay time for inching mode. From left to right there are 1, 2, 3, 4, correspondingly for CH1, CH2, CH3, CH4. Toggle all switches down (0000), the inching time will delay for 4s; Toggle all switches up (1111), the inching time will delay for 0.25s.

Please refer to the delay time setting list below:


Sonoff 4CH Pro K6-new.png


S5 is 433MHz code clearing button: To clear the 433MHz coding, please press and hold it until the 4 LEDs lit up green and off.

Pair with 433MHz RF Remote: Quickly press twice one of the switches below, then press one of the ABCD buttons on your RF Remote. If paired successfully, the button will lit up in red, and the corresponding status LED will blink in green for 4 times. You can press the button to turn on or turn off the related channel.

Sonoff-4ch-pro-switch.jpg

433mhz rf remote im121218034 1.jpg

CE,RoHS,FCC Certificate

RoHS Test Report for Sonoff 4CH & 4CH Pro

CE-RED for Sonoff 4CH and Sonoff 4CH Pro

FCC Certificate for Sonoff 4CH & 4CH Pro

FCC Test Report for Sonoff 4CH & 4CH Pro

CE-EMC for Sonoff 4CH and Sonoff 4CH Pro

CE-EMF for Sonoff 4CH and Sonoff 4CH Pro

CE-LVD for Sonoff 4CH and Sonoff 4CH Pro

CE-RF for Sonoff 4CH and Sonoff 4CH Pro

Download

Sonoff 4CH Pro Hardware

Sonoff 4CH Pro Schematic


Useful Links

Wi-Fi Socket/Switch Fail to be Controlled Troubleshooting

Features wanted, bug report and discuss in Itead Smart Home Forum