1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your PHYSEN WiFi Wireless Doorbell System, Model A-DB02-B26WGP-US-B. This smart doorbell system includes a wireless transmitter and a plug-in receiver that acts as a smart gateway, providing both local chime alerts and real-time notifications to your smartphone via a dedicated app. The system is designed for ease of use and reliable performance, ensuring you stay connected to your home's entry points.
Key features include a powerful 110dB chime with an LED indicator, 32 selectable ringtones, and three operational modes (sound only, light only, or sound and light). The system is expandable, allowing connection of up to 32 transmitters to a single receiver, making it suitable for various applications from homes to offices. It operates on 2.4G WiFi networks and offers app notifications without any recurring subscription fees.
2. Setup
2.1 Package Contents
Before beginning installation, please verify that all components are present:
- 1 x WiFi Wireless Doorbell Transmitter (Push Button)
- 1 x Plug-in Doorbell Receiver (Smart Gateway)
- 1 x User Manual
- 1 x Double-sided Mounting Tape
- Anchors and Screws for mounting
- 1 x A23 Battery (pre-installed in transmitter)
2.2 Physical Installation
The installation process involves mounting the transmitter and plugging in the receiver.
2.2.1 Receiver Installation
Plug the doorbell receiver into a standard electrical outlet in a central location within your home. Ensure it is within range of your 2.4GHz WiFi network for optimal smart features.

Image: The compact doorbell receiver plugged into a wall outlet, ready for operation.
2.2.2 Transmitter Installation
Choose a suitable location for the doorbell transmitter, typically near your entrance. The transmitter is IP55 waterproof, making it suitable for outdoor use.
- Clean the mounting surface thoroughly to ensure good adhesion.
- For temporary or less permanent installation, use the provided double-sided mounting tape to affix the transmitter to the desired surface.
- For a more secure and permanent installation, use the included screws and anchors. Mark the drill points, drill pilot holes, insert anchors, and then screw the transmitter into place.

Image: The doorbell transmitter, a black rectangular unit with a large circular button, mounted on a wall next to a door.

Image: A close-up of the doorbell push button, highlighting its IP55 waterproof rating, showing it withstands rain, snow, and heat.
2.3 App Connection and Pairing
To utilize the smart features and receive phone notifications, connect the receiver to your smartphone app.
- Download the companion app (e.g., "Smart Life" or "Tuya") from your smartphone's app store.
- Open the app and create an account or log in.
- Long press the "Pair Network" button on the receiver for 5 seconds until the indicator light flashes, indicating it's in pairing mode.
- In the app, tap the "+" button (usually in the top right corner) and select "Add Device".
- Follow the on-screen prompts to search for nearby devices and connect to your 2.4GHz WiFi network.
- Once connected, the app will confirm successful pairing.

Image: A visual guide showing the steps to connect the doorbell receiver to a smartphone app, including pressing the pair button, adding a device in the app, entering WiFi information, and confirming connection.
Video: This video demonstrates how to connect the doorbell gateway (receiver) to your phone application, guiding you through the pairing process.
2.4 Adding Additional Transmitters (Optional)
The system supports up to 32 transmitters per receiver. To add more:
- Ensure the new transmitter has a working battery.
- Follow the app pairing process as described in Section 2.3.
- During the pairing process, activate the new transmitter by pressing its button to link it with the receiver.
Video: This video illustrates the procedure for adding an additional transmitter to your existing doorbell system.
3. Operating Instructions
3.1 Basic Operation
When a visitor presses the doorbell transmitter button, the receiver will chime and flash its LED indicator according to its current settings. Simultaneously, if connected to the app, you will receive a real-time notification on your smartphone.

Image: A sequence showing a finger pressing the doorbell button, the receiver chiming, and a smartphone displaying an app notification.

Image: A person relaxing on a beach, receiving a doorbell notification on their smartphone, illustrating global app alerts.
3.2 Changing Ringtone, Volume, and Modes
You can customize the chime's ringtone, volume, and operating mode (sound only, light only, or sound and light) through the connected smartphone app.
- Open the doorbell's settings within the app.
- Select "Ringtone" to browse and choose from 32 available melodies.
- Adjust the "Volume" using the slider to your preferred level.
- Choose from the three "Modes":
- Sound Only: The receiver will only play the selected melody.
- Light Only: The receiver's LED indicator will flash without sound.
- Light & Sound: The receiver will play the melody and flash its LED indicator.

Image: Screenshots of the mobile app interface showing options to change ringtones, adjust volume, and select between sound, light, or sound & light modes.
Video: This video demonstrates how to change the ringtone, adjust the volume, and select between the three operating modes (sound, light, or both) using the smartphone app.

Image: Visual representation of the three available modes for the receiver: Sound Only, Light Only, and Light & Sound, showing the corresponding visual and auditory cues.
4. Maintenance
4.1 Battery Replacement (Transmitter)
The doorbell transmitter is powered by an A23 battery. When the transmitter's performance degrades or stops working, it may be time to replace the battery.
- Carefully open the transmitter casing. This may require a small screwdriver (often included with the product).
- Locate the A23 battery. Note its orientation.
- Remove the old battery and insert a new A23 battery, ensuring correct polarity.
- Close the transmitter casing securely.
Video: This video provides a step-by-step guide on how to safely change the battery in the doorbell transmitter.
4.2 Cleaning
Wipe the doorbell transmitter and receiver with a soft, dry cloth. Avoid using abrasive cleaners or solvents, as these can damage the finish or internal components.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Doorbell does not chime. |
|
|
| No app notifications. |
|
|
| Chime volume is too low/high. | Volume setting needs adjustment. | Adjust the volume through the smartphone app (refer to Section 3.2). |
| Chime mode (sound/light) is incorrect. | Mode setting needs adjustment. | Change the operating mode through the smartphone app (refer to Section 3.2). |
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | A-DB02-B26WGP-US-B |
| Brand | PHYSEN |
| Item Weight | 5.9 ounces |
| Product Dimensions | 3.5 x 3 x 3.7 inches |
| Size | 1 Transmitter + 1 Receiver |
| Color | Black |
| Item Package Quantity | 1 |
| Included Components | Wifi wireless doorbell with remote button and plug-in doorbell receiver, User Manual*1, double sided mounting tape, anchors, screws and A23 battery included. |
| Battery Cell Type | Alkaline (A23 for transmitter) |
| Wireless Range | Up to 1000ft / 300m (in open area) |
| WiFi Connectivity | 2.4GHz only |
| Chime Volume | Up to 110dB |
| Ringtones | 32 selectable melodies |
| Expandability | Supports up to 32 transmitters per receiver |
| Waterproof Rating (Transmitter) | IP55 |
7. Warranty & Support
7.1 Warranty Information
PHYSEN offers an 18-month warranty for this product. This warranty covers manufacturing defects and ensures the product functions as intended under normal use. Please retain your proof of purchase for warranty claims.
7.2 Customer Support
For any questions, technical assistance, or warranty inquiries, please contact PHYSEN customer service. Our support team is available 24 hours to assist you.
You can typically find contact information on the product packaging, the official PHYSEN website, or through your purchase platform (e.g., Amazon seller "KINGWANT").