Smart Relay Module User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the WPIJIBVKZ 1-Channel Smart Relay Module (DC5V Pro). This device is designed for smart home applications, enabling remote control of various electrical appliances through WiFi connectivity and a compatible mobile application. It supports multiple operating modes including jog, inching, and self-locking, offering versatile control options for your automation needs.

Please read this manual thoroughly before using the product to ensure safe and correct operation.

2. Product Features

• Single Channel Relay: Controls one independent electrical circuit.
• Multiple Operating Modes: Supports Jog (Momentary), Inching (Timed Momentary), and Self-Locking (Toggle) modes for flexible control.
• WiFi Connectivity: Enables remote control via a smartphone application.
• Wide Voltage Input: Operates with DC 7-32V or DC 5V via Type-C USB.
• Smart Home Integration: Compatible with common smart home platforms (e.g., Tuya Smart, Smart Life, depending on firmware).
• Manual Control: Features a physical button for local operation.
• Network Indicator: LED provides status feedback on network connection.

3. Specifications

Figure 3.1: Smart Relay Module with indicated dimensions (68mm x 41mm).

4. Safety Information

Please observe the following safety precautions to prevent injury or damage to the device:

• Electrical Safety: All wiring should be performed by a qualified electrician or knowledgeable individual. Ensure power is disconnected before any wiring or maintenance.
• Voltage Compatibility: Only connect the module to power sources within the specified voltage range (DC 7-32V or DC 5V). Exceeding these limits will damage the device.
• Load Limits: Do not exceed the maximum current rating of 10A for the relay output. Overloading can cause overheating and fire hazards.
• Environment: Install the module in a dry, well-ventilated area, away from direct sunlight, high temperatures, humidity, and corrosive substances.
• Children and Pets: Keep the device out of reach of children and pets.
• Disassembly: Do not attempt to disassemble or modify the module. Unauthorized modifications will void the warranty and may pose safety risks.

5. Product Overview and Components

Familiarize yourself with the various components and connection points of the smart relay module:

Figure 5.1: Labeled diagram of the Smart Relay Module.

• Input Power DC 7-32V: Terminal block for primary power input (DC 7-32V).
• Input Power Type-C 5V: USB Type-C port for alternative 5V DC power input.
• Network Indicator: LED light indicating WiFi connection status.
• Network Pairing Button: Button used to initiate WiFi pairing mode.
• Manual On/Off Button: Physical button to manually toggle the relay state.
• Relay Output Terminals:
  • COM (Common): Common terminal for the relay.
  • NO (Normally Open): Terminal that connects to COM when the relay is activated.
  • NC (Normally Closed): Terminal that connects to COM when the relay is deactivated.

Figure 5.2: Top view of the Smart Relay Module.

6. Setup and Installation

6.1 Powering the Module

The module can be powered in two ways:

• DC 7-32V Input: Connect your DC 7-32V power supply to the "Input Power DC 7-32V" screw terminals. Ensure correct polarity (+ and -).
• DC 5V Type-C Input: Connect a standard 5V DC power adapter (e.g., a phone charger) to the Type-C USB port.

Important: Do not connect both power sources simultaneously. Choose only one method for powering the module.

6.2 Wiring the Load

The relay acts as a switch for your connected device (load). It provides dry contact outputs (NO, COM, NC), meaning it does not supply power to the load itself but rather completes or breaks a circuit. The wiring configuration depends on whether you want the load to be normally off (NO) or normally on (NC).

General Wiring Principle:

1. Disconnect Power: Ensure the power supply to both the relay module and the device you are controlling is completely disconnected before wiring.
2. Identify Load Circuit: Determine which wire in your load's power circuit you want the relay to switch (e.g., the live wire).
3. Connect COM: Connect one end of the wire from your load's power circuit to the COM terminal on the relay module.
4. Connect NO or NC:
   • If you want the load to be normally off and turn on when the relay activates, connect the other end of the wire from your load's power circuit to the NO (Normally Open) terminal.
   • If you want the load to be normally on and turn off when the relay activates, connect the other end of the wire from your load's power circuit to the NC (Normally Closed) terminal.
5. Secure Connections: Ensure all screw terminals are tightened securely to prevent loose connections and potential hazards.

Warning: Incorrect wiring can cause damage to the module, the connected device, or pose a risk of electric shock. If you are unsure, consult a qualified electrician.

7. Operating Instructions

7.1 Manual Operation

The module features a "Manual On/Off Button" for direct control of the relay state. Pressing this button will toggle the relay between its ON and OFF states, regardless of the configured mode (Jog, Inching, Self-Locking) or WiFi control.

7.2 WiFi Pairing and APP Control

To control the module via a smartphone application, you need to pair it with your home WiFi network.

1. Download App: Download a compatible smart home application (e.g., "Tuya Smart" or "Smart Life") from your device's app store.
2. Register/Login: Open the app and register a new account or log in to an existing one.
3. Enter Pairing Mode: Power on the relay module. Press and hold the "Network Pairing Button" for approximately 5-7 seconds until the Network Indicator LED starts blinking rapidly. This indicates the module is in pairing mode.
4. Add Device in App: In the app, tap "Add Device" or the "+" icon. Select "Electrical" or "Switch" category, then choose "WiFi Switch" or "Relay Module".
5. Connect to WiFi: Follow the on-screen instructions in the app. You will typically need to confirm your 2.4GHz WiFi network and enter its password.
6. Pairing Completion: The app will search for the device. Once found and connected, the Network Indicator LED on the module will stop blinking and remain solid. You can then rename the device in the app.
7. Remote Control: You can now control the relay module remotely through the app, set schedules, timers, and integrate it into smart scenes.

Note: The module only supports 2.4GHz WiFi networks. 5GHz networks are not supported.

7.3 Operating Modes

The smart relay module supports three primary operating modes, configurable via the mobile application:

• Jog Mode (Momentary): In this mode, the relay activates (turns ON) only while the control signal (e.g., button press in the app) is held. Once the signal is released, the relay deactivates (turns OFF). This is suitable for applications requiring a brief pulse, such as opening a gate or triggering a doorbell.
• Inching Mode (Timed Momentary): Similar to Jog mode, but the relay activates for a preset duration (e.g., 0.5 seconds, 1 second, etc.) after receiving a single trigger, then automatically deactivates. The duration can typically be configured within the app. This is useful for applications needing a precise, short activation time.
• Self-Locking Mode (Toggle): In this mode, each trigger (e.g., button press in the app) toggles the relay's state. If the relay is OFF, a trigger turns it ON. If it's ON, a trigger turns it OFF. This is ideal for controlling lights or other devices that need to be switched ON or OFF and remain in that state until the next trigger.

The specific method for configuring these modes will be found within the settings or control interface for the device in your chosen smart home application.

8. Maintenance

To ensure the longevity and optimal performance of your smart relay module, follow these simple maintenance guidelines:

• Keep Clean: Periodically wipe the module with a soft, dry cloth to remove dust and debris. Do not use liquid cleaners or solvents.
• Inspect Connections: Regularly check all wired connections to ensure they are secure and free from corrosion. Loose connections can lead to intermittent operation or overheating.
• Environmental Conditions: Ensure the module remains in a dry, stable environment within its specified operating temperature range. Avoid exposure to extreme temperatures or humidity.
• Firmware Updates: Check your smart home application periodically for any available firmware updates for the module. Updates can improve performance, add features, or fix bugs.

9. Troubleshooting

If you encounter issues with your smart relay module, refer to the following common problems and solutions:

If the problem persists after trying these solutions, please contact customer support.

10. Warranty and Support

For warranty information, please refer to the terms and conditions provided by your retailer or the manufacturer, WPIJIBVKZ, at the time of purchase. Keep your proof of purchase for warranty claims.

If you require technical assistance or have questions not covered in this manual, please contact the seller or manufacturer's customer support channel. When contacting support, please provide your product model (DC5V Pro) and a detailed description of the issue.

This manual is subject to change without notice. The latest version may be available on the manufacturer's website.