WELL-KO-KO PA-441B
Tuya WiFi Smart Smoke Alarm User Manual
Model: PA-441B | Brand: WELL-KO-KO
1. Introduction
The WELL-KO-KO Tuya WiFi Smart Smoke Alarm is a battery-powered photoelectric smoke detector designed to enhance home safety. It provides real-time smoke detection and alerts through its integrated Wi-Fi connectivity, allowing for remote monitoring via the Tuya app. This device is compatible with smart home ecosystems like Amazon Alexa and Google Assistant, offering voice control capabilities.
Its high-sensitivity sensor and loud 85dB alarm ensure prompt notification of potential fire hazards, while its low power consumption design provides long-lasting operation. This manual provides detailed instructions for installation, operation, and maintenance to ensure optimal performance and safety.

Figure 1: Front view of the Tuya WiFi Smart Smoke Alarm.
2. Important Safety Information
Please read all instructions carefully before installation and operation. Failure to follow these instructions may result in improper operation of the alarm, leading to property damage, injury, or death.
- Do not paint the smoke alarm. Paint can clog the sensing chambers and prevent the alarm from operating correctly.
- Do not install in areas with high humidity, excessive dust, or extreme temperatures.
- Test the smoke alarm regularly as described in the "Operation" section.
- This device is designed for indoor use only.
- Ensure the battery is installed correctly and replaced when the low battery alert is issued.
- Do not attempt to repair the unit yourself. Refer all servicing to qualified personnel.
3. Package Contents
Verify that all items are present in the package:
- 1 x Tuya WiFi Smart Smoke Alarm (Model: PA-441B)
- 1 x User Manual
- Mounting Screws and Anchors
Note: A 9V battery is required for operation and is not included in the package.
4. Product Specifications
| Feature | Specification |
|---|---|
| Brand | WELL-KO-KO |
| Model Number | PA-441B |
| Power Source | Battery Powered (9V battery, not included) |
| Sensor Type | Photoelectric Smoke Detection |
| Alarm Sound Level | 85dB at 3 meters |
| Connectivity | Wi-Fi (2.4GHz only) |
| Compatible Devices | Tuya App, Amazon Alexa, Google Assistant |
| Material | Fire-retardant ABS |
| Product Dimensions | 1.18"D x 3.7"W x 3.7"H (approx. 106mm x 106mm x 41.5mm) |
| Item Weight | 3.2 ounces (0.2 Pounds) |
| Operating Humidity | 10-95% RH |
| Upper Temperature Rating | 140°F (60°C) |

Figure 2: Product dimensions and side view.
5. Setup and Installation
5.1 Battery Installation
- Open the battery compartment cover on the back of the smoke alarm.
- Insert a new 9V battery, ensuring correct polarity (+ and -).
- Close the battery compartment cover securely.

Figure 3: Inserting the 9V battery into the smoke alarm.
5.2 Mounting the Smoke Alarm
- Choose a suitable location for installation. Smoke alarms should be installed on every level of your home, inside each bedroom, and outside each sleeping area. Avoid installing near windows, doors, or air vents where drafts might interfere with smoke detection.
- Using the mounting bracket as a template, mark the positions for drilling on the ceiling or wall.
- Drill holes and insert the provided wall anchors if necessary.
- Attach the mounting bracket using the screws.
- Align the smoke alarm with the mounting bracket and twist clockwise until it locks into place.
5.3 App Pairing (Tuya Smart / Smart Life App)
The smoke alarm connects to your home Wi-Fi network (2.4GHz only) via the Tuya Smart or Smart Life app for remote monitoring and notifications.
- Download the "Tuya Smart" or "Smart Life" app from your smartphone's app store (available on iOS and Android).
- Register or log in to your account.
- Ensure your phone is connected to a 2.4GHz Wi-Fi network.
- Open the app and tap "+" or "Add Device".
- Select "Security & Video Surveillance" > "Smoke Detector (Wi-Fi)".
- Follow the on-screen instructions to put the device into pairing mode (usually by pressing and holding the test button until an indicator light flashes rapidly).
- Enter your Wi-Fi network password in the app.
- Wait for the device to connect. Once connected, you can rename the device and assign it to a room.

Figure 4: The smoke alarm integrates with Tuya, Amazon Alexa, and Google Assistant.

Figure 5: Example of mobile app push notifications for remote alerts.
6. Operation
6.1 Normal Operation
In normal operating mode, the smoke alarm continuously monitors for smoke. The LED indicator will flash periodically (e.g., every 30-40 seconds) to indicate proper functioning.
6.2 Alarm Function
When smoke is detected, the alarm will sound a loud 85dB siren, and the red LED indicator will flash rapidly. Simultaneously, if connected to Wi-Fi, the Tuya app will send instant push notifications to your smartphone, providing crucial early warning.

Figure 6: The alarm's LED indicator lights up in red and strobes, and an audible alarm is sent to the Tuya APP via the WiFi network.
6.3 Test/Mute Button
The device features a "TEST/MUTE" button. Press this button to:
- Test the Alarm: In normal mode, press the button to initiate a self-test. The alarm will sound briefly, indicating that the sensor and siren are functioning correctly. It is recommended to test the alarm weekly.
- Mute the Alarm: If the alarm sounds due to a non-emergency situation (e.g., cooking fumes), press the button to temporarily silence the alarm. The alarm will automatically reset after a few minutes if the smoke clears.
7. Maintenance
7.1 Battery Replacement
The smoke alarm will emit a short chirp or send a low battery notification via the app when the battery needs replacement. Replace the 9V battery immediately to ensure continuous protection. Refer to section 5.1 for battery installation steps.

Figure 7: The mobile app will notify you of low battery voltage.
7.2 Cleaning the Smoke Alarm
Dust and debris can accumulate on the smoke alarm and affect its performance. Clean the smoke alarm at least once a month:
- Gently vacuum the exterior of the alarm using a soft brush attachment.
- Wipe the surface with a slightly damp cloth. Do not use cleaning solvents or harsh chemicals.
- Do not open the alarm's casing for cleaning.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Alarm does not sound during test. | Battery is dead or incorrectly installed. | Replace battery or ensure correct polarity. |
| Alarm chirps periodically. | Low battery warning. | Replace the 9V battery immediately. |
| Cannot connect to Wi-Fi / App. | Incorrect Wi-Fi password; not 2.4GHz network; device too far from router; network congestion. |
|
| False alarms. | Dust accumulation; cooking fumes; steam; high humidity. |
|
9. Warranty and Support
The WELL-KO-KO Tuya WiFi Smart Smoke Alarm is designed for reliability and performance. For specific warranty details, please refer to the product packaging or contact the manufacturer directly. If you encounter any issues not covered in this manual or require further assistance, please contact WELL-KO-KO customer support through the retailer where the product was purchased or visit the official WELL-KO-KO website for contact information.
Please have your model number (PA-441B) and purchase date available when contacting support.
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