Elivco Tuya Smart WiFi PIR Motion Detector Sensor

1. Product Overview

The Elivco HW400B is a Tuya Smart WiFi PIR (Passive Infrared) Motion Detector Sensor designed to detect human body or animal movement within its detection range. It connects directly to your 2.4GHz Wi-Fi network, allowing for remote monitoring and alerts via the Smart Life or Tuya Smart mobile application. This sensor integrates with smart home platforms like Alexa for enhanced automation.

Figure 1: Elivco Tuya Smart WiFi PIR Motion Detector Sensor

Figure 2: 360-degree detection capability

2. Package Contents

• 1 x PIR Motion Sensor (WiFi Version)
• 1 x Set of Sticker (for mounting)
• 1 x User Manual (English)

3. Specifications

Figure 3: Detailed Specifications

Figure 4: Product Dimensions

Figure 5: Detection Range View

4. Setup Guide

4.1 Powering the Device

The sensor requires two DC3V LR03 (AAA) batteries (not included). Insert them into the battery compartment, ensuring correct polarity. The device can also be powered via a DC5V/2A USB input, but this is only compatible with rechargeable batteries, not dry cell batteries.

4.2 App Download and Installation

Download the "Smart Life" or "Tuya Smart" application from the App Store (for iOS) or Google Play Store (for Android). Register or log in to your account.

Figure 6: Scan to download Tuya App

4.3 Adding the Device to the App

1. Open the Tuya Smart or Smart Life APP and tap the "+" icon or "Add Device" button to begin adding a new device.


Figure 7: App Setup Steps 1 & 2

2. Select "Security & Sensor" from the device categories to proceed.
3. Power on the device. Use a pin to press the RESET button for more than 5 seconds until the Wi-Fi indicator light on the sensor flashes rapidly. This puts the device into automatic network configuration mode. Confirm this state in the app.

Figure 8: App Setup Steps 3 & 4
4. Enter your 2.4GHz Wi-Fi network password when prompted by the app.
5. Follow the on-screen instructions in the app to complete the pairing process. Once connected, the device will appear in your app's device list.

4.4 Mounting the Sensor

The sensor can be installed on a ceiling or wall. To remove the mounting bracket, rotate the sensor counterclockwise. Use the provided adhesive sticker to secure the bracket to your desired location. Then, reattach the sensor by rotating it clockwise onto the bracket.

Figure 9: Sensor Details and Mounting Bracket

Figure 10: Stick and Use Mounting

5. Operating Instructions

Once the sensor is successfully paired and mounted, it will continuously monitor for movement within its detection range (up to 6 meters with a 120° angle). When motion is detected, the sensor will trigger an alert.

5.1 Real-time Monitoring and Alerts

• The Smart Life/Tuya Smart app will push emergency alert notifications to your phone when movement is detected.
• You can view the real-time status and history records of sensor activities directly within the app.

Figure 11: Smart Remote Control via App

5.2 Testing the Sensor

To test the sensor's functionality:

1. Move laterally within the sensor's detection area.
2. Observe the indicator light on the sensor. It should illuminate.
3. Check your mobile app for a "Human detected" push notification.

Figure 12: App Testing Steps

5.3 Smart Home Integration (Alexa)

The sensor supports integration with Alexa. Follow the instructions within the Smart Life/Tuya Smart app to link your account with Alexa and enable voice control or automation routines based on motion detection.

6. Maintenance

• Battery Replacement: When the low-voltage notification (≤2.2V) is received, replace the two LR03 (AAA) batteries promptly to ensure continuous operation.
• Cleaning: Gently wipe the sensor lens and body with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials that could damage the device.
• Placement: Ensure the sensor is placed in an area free from direct sunlight, heat sources, or strong air currents, which can cause false triggers.

7. Troubleshooting

• Device not connecting to Wi-Fi:
  • Ensure your Wi-Fi network is 2.4GHz. The sensor does not support 5GHz Wi-Fi.
  • Verify the Wi-Fi password is correct.
  • Make sure the sensor is within range of your Wi-Fi router (up to 45m).
  • Reset the sensor by pressing the RESET button for 5 seconds until the Wi-Fi indicator flashes rapidly, then try pairing again.
• No motion detection or false alarms:
  • Check battery levels and replace if low.
  • Ensure the sensor lens is clean and unobstructed.
  • Adjust the sensor's placement to avoid direct sunlight, heating/cooling vents, or moving objects (e.g., curtains) that might cause false triggers.
  • Confirm the detection angle and distance are suitable for your monitoring area.
• App notifications not received:
  • Check your phone's notification settings for the Smart Life/Tuya Smart app to ensure notifications are enabled.
  • Verify your phone has an active internet connection.
  • Ensure the app is running in the background or allowed to run in the background by your phone's OS.
• USB power not working:
  • Remember that USB power is only for use with rechargeable batteries, not dry cell batteries.
  • Ensure the USB cable and power adapter (DC5V/2A) are functioning correctly.

8. Frequently Asked Questions (FAQ)

Q: Is a separate hub required for this sensor?

A: No, this is a WiFi version sensor and connects directly to your 2.4GHz Wi-Fi network. No additional hub is needed.

Q: Can this sensor be used outdoors?

A: This sensor is designed for indoor use. While it has an operating temperature range of -10℃ to 50℃ and humidity up to 95% RH, it is not specified as rainproof and should not be exposed to direct weather conditions.

Q: What type of batteries does it use?

A: It uses two DC3V LR03 (AAA) batteries, which are not included in the package.

Q: Can I power it via USB?

A: Yes, you can power it via a DC5V/2A USB connection, but this is only compatible with rechargeable batteries. Dry cell batteries cannot be used with USB power simultaneously.

Q: What apps are compatible with this sensor?

A: The sensor works with the "Smart Life" and "Tuya Smart" applications, available on both Android and iOS platforms.

Q: Does it work with Alexa?

A: Yes, the sensor supports integration with Amazon Alexa for smart home automation.

9. User Tips

• Optimize Battery Life: To maximize battery life, consider placing the sensor in areas with less frequent movement if constant monitoring is not critical. The standby time is estimated for 15 triggers per day.
• Smart Automation: Leverage the Tuya Smart or Smart Life app's automation features. For example, you can set up routines to turn on lights when motion is detected, or integrate with other smart devices to create a comprehensive security system.
• Strategic Placement: For optimal detection, consider mounting the sensor on the ceiling for 360-degree coverage, or on a wall in a corner to cover entryways. Avoid placing it behind large furniture or obstacles.

10. Warranty and Support

This product comes with a 12-month manufacturer's limited warranty for defective items, excluding items damaged or misused after receipt. Accessories are covered by a 3-month warranty. Please retain your proof of purchase for warranty claims.

For technical support or warranty inquiries, please contact the seller or manufacturer directly through the platform where the product was purchased.