SONOFF DIY 4CH/4CHPRO User Manual V1.1

Product Introduction

This device is a 4-Gang Wi-Fi smart switch with self-locking, interlock and inching capabilities, allowing remote control of connected devices via smartphone, scheduling, and family sharing.

4CHR3 Overview

Front panel of the 4-gang Wi-Fi smart switch (4CHR3). It features four circular buttons labeled L1, L2, L3, L4 on the left, which function as pairing buttons and manual switches. On the right are terminal blocks for AC input (L, N) and outputs (L1, L2, L3, L4). Below the outputs are additional terminal blocks labeled COM, NC, NO for each channel.

4CHPROR3 Overview

Front panel of the 4-gang Wi-Fi smart switch with RF control (4CHPROR3). It features four circular buttons labeled R1, R2, R3, R4 on the left, serving as pairing buttons and manual switches. On the right are terminal blocks for AC input (L, N) and outputs (L1, L2, L3, L4). It also includes a DC input port and terminal blocks labeled COM, NC, NO for each channel.

Operating Instructions

1. Power Off

Diagram illustrating a circuit breaker panel with switches in the ON and OFF positions.

Safety Warning: To avoid electric shocks, please consult the dealer or a qualified professional for help when installing and repairing!

2. Wiring Instruction

Light Fixture Wiring:

Wiring diagram for 4CHR3 connecting to light fixtures. AC input (100-240V AC, L, N) is connected to the device's input terminals. The device's output terminals (L1, L2, L3, L4) are connected to four separate light bulbs.

Wiring diagram for 4CHPROR3 (DC Input) connecting to light fixtures. DC input (9-23V) and AC input (100-240V AC, L, N) are connected to the device's input terminals. The device's output terminals (L1, L2, L3, L4) are connected to four separate light bulbs.

Socket Wiring:

(Note: Ground wire connection is optional if not present.)

Wiring diagram for 4CHPROR3 (AC Input) connecting to socket outlets. AC input (100-240V AC, L, N) is connected to the device's input terminals. The device's output terminals (L1, L2, L3, L4) are connected to four socket outlets.

Wiring diagram for 4CHR3 connecting to socket outlets. AC input (100-240V AC, L, N, G) is connected to the device's input terminals. The device's output terminals (L1, L2, L3, L4) are connected to four socket outlets.

Wiring diagram for 4CHPROR3 (DC Input) connecting to socket outlets. DC input (9-23V) and AC input (100-240V AC, L, N, G) are connected to the device's input terminals. The device's output terminals (L1, L2, L3, L4) are connected to four socket outlets.

Make sure all wires are connected correctly. ⑨

3. Download the eWeLink APP

Download the eWeLink APP from the Apple App Store ? or Google Play Store ▶️.

4. Power On

After powering on, the device will enter the quick pairing mode (Touch) during the first use. The Wi-Fi LED indicator changes in a cycle of two short and one long flash and release.

The device will exit the quick pairing mode (Touch) if not paired within 3 minutes. To re-enter this mode, long press any pairing button for about 5 seconds until the Wi-Fi LED indicator changes in a cycle of two short and one long flash and release.

5. Add the Device

Tap "+" and select "Quick Pairing", then follow the on-screen prompts in the APP.

Compatible Pairing Mode

If you cannot enter Quick Pairing Mode (Touch), try "Compatible Pairing Mode" to pair:

1. Long press any pairing button for 5 seconds until the Wi-Fi LED indicator shows a cycle of two short flashes and one long flash, then release. Press any pairing button again for 5 seconds until the Wi-Fi LED indicator flashes quickly. The device then enters Compatible Pairing Mode.
2. In the eWeLink APP, tap "+" and select "Compatible Pairing Mode". Select the Wi-Fi SSID named ITEAD-****** and enter the password 12345678. Return to the eWeLink APP and tap "Next". Wait for the pairing to complete.

Specifications

Note: 4CHR3 does not support the remote controller with 433.92MHz.

Wi-Fi LED Indicator Status Instruction

Installation Recommendation: The device weight is less than 1 kg. An installation height of less than 2 m is recommended.

Features

• ? Remote Control
• ⏳ Single/Countdown Timing
• ? Voice Control
• ? Share Control
• ✨ Smart Scene
• ? Self-locking
• ? Interlock
• ⏱️ Inching
• ? 433MHz Remote Control
• ? Power-on State
• ? Camera Linking
• ? LAN Control

RF Remote Controller Pairing

The 4CHPROR3 supports remote controllers with a 433.92MHz frequency band for turning devices on/off. Each channel can learn independently, providing local short-range wireless control.

Pairing Method:

Long press the channel switch button for 3 seconds until the Wi-Fi LED indicator turns red and flashes "quickly once". Release the button, then short press the button on the remote control to be paired. If the Wi-Fi LED indicator turns red and flashes "quickly once", it indicates successful pairing.

Clearing Method:

Long press the channel switch button for 5 seconds until the Wi-Fi LED indicator turns red and flashes "quickly twice", then release. Short press the button to clear the code on the remote control. If the Wi-Fi LED indicator turns red and flashes "quickly once", it indicates the code has been cleared.

Switch Network

If you need to change the network, long press any pairing button for about 5 seconds until the Wi-Fi LED indicator changes in a cycle of two short and one long flash and release. The device then enters quick pairing mode, and you can pair it again.

Factory Reset

Deleting the device on the eWeLink app restores it to factory settings.

Common Problems

Q: Why my device stays "Offline"?

A: The newly added device needs 1-2 minutes to connect to Wi-Fi and the network. If it remains offline for a long time, check the blue Wi-Fi indicator status:

1. Blue Wi-Fi indicator flashes once per second: Indicates the switch failed to connect to your Wi-Fi. Possible reasons:
   • Incorrect Wi-Fi password entered.
   • Excessive distance between the switch and router, or environmental interference. Try moving closer to the router. If unsuccessful, try adding the device again.
   • The 5G Wi-Fi network is not supported; only the 2.4GHz wireless network is compatible.
   • MAC address filtering is enabled. Please disable it.
2. If none of the above methods resolve the issue, try creating a Wi-Fi hotspot using your mobile phone's data network and then add the device again.
3. Blue indicator flashes twice per second: Indicates the device has connected to Wi-Fi but failed to connect to the server. Ensure a stable network connection. Frequent double flashes may indicate an unstable network, not a product issue. If the network is normal, try turning off the power to restart the switch.

FCC Warning

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Note:

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

EU Declaration of Conformity

Shenzhen Sonoff Technologies Co., Ltd. hereby declares that the radio equipment type 4CHR3/4CHPROR3 is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: https://sonoff.tech/usermanuals

Technical Specifications

TX Frequency: WiFi: 2412-2472MHz

RX Frequency: WiFi: 2412-2472MHz SRD: 433.92MHz

Output Power: 15.55dBm; 16.3dBm(802.11b), 17.16dBm(802.11g), 17.38dBm(802.11n20)