Tuya Smart 4G LTE 4-Channel Intelligent Relay Switch User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your mumubiz Tuya Smart 4G LTE 4-Channel Intelligent Relay Switch. This wireless switch supports inching, self-locking, and interlocking modes, allowing remote control of connected home appliances or devices via the Tuya Smart or Smart Life mobile application. It utilizes 4G-LTE connectivity, eliminating the need for Wi-Fi and offering stable, lag-free operation.

Important Note: This 4G switch does not include a 4G SIM card. You must provide your own 4G SIM card for operation.

2. Safety Information

Ensure all electrical connections are made by a qualified professional.
Disconnect power before installing or servicing the device.
Do not expose the device to moisture or extreme temperatures.
Verify the input voltage matches the device specifications to prevent damage.
Keep the device away from children.

3. Product Features

4G-LTE Connectivity: Stable network connection without Wi-Fi, offering remote control from anywhere.
4-Channel Control: Independently control up to four devices.
Multiple Operating Modes: Supports Inching, Self-locking, and Interlocking modes.
APP Remote Control: Manage devices via Tuya Smart or Smart Life application.
Timing Functions: Schedule on/off times, set countdowns, and customize inching durations.
Share Control: Allow multiple users to control the same device.
Dry Contact Output: Versatile for various applications.
Voice Control: Compatible with Google Assistant and Amazon Alexa.
RF433 MHz Support: For remote wireless control.

Overview of mumubiz 4G LTE Smart Switch features — Overview of the mumubiz 4G LTE Smart Switch, highlighting its 4-channel remote control capabilities, support for Inching, Self-locking, and Interlocking modes, APP remote control, timing functions, dry contact output, share control, smart scene integration, and compatibility with Google Assistant and Amazon Alexa. Note: SIM card not included.

4G LTE Network Connectivity — Network connectivity details, illustrating the stable 4G LTE network connection without the need for Wi-Fi, offering smoother and more responsive control compared to 2G networks. Shows direct connection to a base station.

4. Specifications

Parameter	Value
Brand Name	mumubiz
Model Number	TY4G4CH-B1RF / MS25022601
Input Voltage (DC variant)	DC 7V-32V / USB 5V
Input Voltage (AC variant)	AC 85-250V / USB 5V
Max. Current	10A/gang
Output	Dry Contact
Wireless Communication	4G-LTE (GPRS)
RF Frequency	433MHz
Compatible APP	Tuya Smart / Smart Life
Working Temperature	-20°C to 70°C
Working Humidity	≤80%
Dimensions	81mm * 76mm * 28mm
State of Assembly	Ready-to-Go
Compatibility	All Compatible
Certification	CE, FCC

Specifications for AC 85-250V variant — Front and back views of the 4G 4-channel smart switch (AC 85-250V variant), indicating its 35mm DIN rail compatibility and listing detailed product parameters.

Specifications for DC 7-32V variant — Front and back views of the 4G 4-channel smart switch (DC 7-32V variant), indicating its 35mm DIN rail compatibility and listing detailed product parameters.

5. Installation and Wiring

5.1 SIM Card Insertion

Locate the SIM card slot on the device. Insert a compatible 4G SIM card into the slot. Ensure the SIM card is correctly oriented as indicated on the device. The device will use this SIM card for 4G-LTE network connectivity.

5.2 Device Components

Device Components (DC Input) — Detailed view of the smart switch components with DC 7-32V and USB 5V input options, including network indicator (red light), RF indicator (blue light), manual switches (K1-K4), RF pairing button, and SIM card slot.

Device Components (AC Input) — Detailed view of the smart switch components with AC 85-250V and USB 5V input options, including network indicator (red light), RF indicator (blue light), manual switches (K1-K4), RF pairing button, and SIM card slot.

5.3 Wiring Diagrams

Always ensure power is disconnected before performing any wiring. The device supports both DC 7-32V and AC 85-250V input power, as well as USB 5V for auxiliary power. The output is dry contact, meaning it provides a switch closure without supplying power to the load.

General Wiring (DC 7-32V Input)

Wiring for DC 7-32V input, Inching mode — Wiring diagram for controlling a gate remote in Inching mode, using a DC 7-32V input power supply.

General Wiring (AC 85-250V Input)

Wiring for AC 85-250V input, Inching mode — Wiring diagram for remote control in Inching mode, using an AC 85-250V input power supply.

Control Button Switch (Inching Mode, DC 7-32V)

Wiring for control button switch, Inching mode — Wiring example for a 4G 4-channel dry contact switch to control a button switch with electronic entry management in Inching mode, using a DC 7-32V input.

Control High-Power Equipment (Self-locking Mode, AC 85-250V)

Wiring for high-power equipment, Self-locking mode — Wiring diagram for controlling high-power equipment (e.g., a heating device) in Self-locking mode, utilizing an external contactor and both AC 85-250V and DC 7-32V inputs.

Motor Forward/Reverse Control (Interlocking Mode, DC 7-32V)

Wiring for motor control, Interlocking mode (DC) — Wiring diagram for motor forward/reverse control in Interlocking mode, using a DC 7-32V input power supply.

Motor Forward/Reverse Control (Interlocking Mode, AC 85-250V)

Wiring for motor control, Interlocking mode (AC) — Wiring diagram for motor forward/reverse control in Interlocking mode, using an AC 85-250V input power supply.

6. Operating Modes

The smart switch offers three distinct operating modes to suit various automation needs:

Inching Mode: In this mode, the relay will turn on for a customizable duration (1-3600 seconds) and then automatically deactivate. This is ideal for momentary actions like opening a garage door, triggering an irrigation system, or pressing a button.
Self-locking Mode: Each of the four channels operates independently. A single command (e.g., from the app) will toggle the relay's state (ON to OFF, or OFF to ON). This is suitable for continuous operation of devices like lights or motors where each channel acts as a simple on/off switch.
Interlocking Mode: This mode ensures that only one channel can be active at any given time. When one channel is activated, all other channels automatically remain closed or are turned off. This is useful for applications requiring exclusive operation, such as motor forward/reverse control or sequential processes.

Illustration of Inching, Self-locking, and Interlocking modes — Visual examples of the three operational modes: Inching, Self-locking, and Interlocking, with typical applications for each.

7. App Control and Features

The mumubiz Smart Switch is controlled via the Tuya Smart or Smart Life application, available for both Android and iOS devices. Once the device is added to the app, you can access a range of smart features:

Remote ON/OFF: Control your connected devices from anywhere using your smartphone.
Scheduled Timing: Set precise schedules for devices to turn on or off automatically (e.g., daily, weekly).
Countdown Timer: Configure devices to turn off after a specified duration.
Inching Duration Setting: Customize the momentary activation time for inching mode directly within the app.
Share Control: Grant access to family members or other users to control the device.
Smart Scenes: Integrate the switch into automated routines with other smart home devices.
Voice Control: Link your Tuya Smart/Smart Life account with Google Assistant or Amazon Alexa for hands-free control.

App functions and interface — Screenshots of the mobile application functions, including scheduled timing, delayed timing, and control permission sharing, showing the main interface, timer settings, inching settings, and sharing options.

Multiple Timing Modes in App — Illustrations of multiple timing modes available through the app: Scheduled timing, Countdown, and Inching.

7.1 Multiple Device Control

8. RF Remote Control Pairing

The device includes an RF433 MHz receiver for pairing with compatible RF remote controls. To pair a remote:

Ensure the smart switch is powered on.
Press and hold the 'RF pairing' button (often labeled K1-K4 or a dedicated button near the indicators) on the smart switch until the RF indicator (blue light) starts blinking.
While the blue light is blinking, press a button on your RF433 MHz remote control.
The blue light should stop blinking and remain solid for a moment, indicating successful pairing.
Test the remote control to ensure it operates the corresponding channel.

9. User Tips

SIM Card Compatibility: While the device supports most European and Russian SIM cards, compatibility with SIM cards from other regions is not guaranteed. It is recommended to verify local network compatibility if you are outside these regions.
Optimal Signal: For best performance, ensure the smart switch is placed in an area with good 4G network coverage.
App Customization: Explore all settings within the Tuya Smart/Smart Life app, especially for inching duration and scheduling, to fully customize your automation needs.

10. Troubleshooting

Device Not Responding: Check the power supply and ensure the SIM card is properly inserted and has an active data plan. Verify 4G network signal strength.
App Connectivity Issues: Ensure your phone has internet access and the Tuya Smart/Smart Life app is updated to the latest version. Restart the app and the smart switch.
RF Remote Not Working: Re-attempt the RF pairing process. Ensure the remote control uses the correct 433MHz frequency and has working batteries.
Incorrect Mode Operation: Double-check the selected operating mode (Inching, Self-locking, Interlocking) in the app and ensure it matches your intended application.
Network Indicator (Red Light) Status: A solid red light usually indicates a stable network connection. If it's blinking or off, there might be a SIM card or network issue.
RF Indicator (Blue Light) Status: A solid blue light after pairing indicates a successful RF connection. If it's not lighting up or blinking unexpectedly, re-pair your RF remote.

11. Maintenance

Keep the device clean and free from dust. Use a dry, soft cloth for cleaning.
Avoid exposing the device to direct sunlight or extreme temperatures.
Regularly check wiring connections for any signs of wear or looseness.
Ensure the SIM card slot is free from debris.

12. Warranty and Support

For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Refer to your purchase documentation for specific contact details.

mumubiz TY4G4CH-B1RF