1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Qtqgoitem Blue White Home Outdoor Security Safety Acousto-Optic Alarm. This device is designed to protect your property by emitting an alarm sound and flashing light when it detects sound or light, and features an anti-tamper function for enhanced security.
2. Safety Information
Please read all safety instructions carefully before installation and operation. Failure to follow these instructions may result in damage to the device or personal injury.
- Ensure the power supply is within the specified range (9-15V).
- Do not expose the device to extreme temperatures or direct water immersion.
- Installation should be performed by a qualified individual if you are unsure about electrical wiring.
- Keep out of reach of children.
- The alarm produces a loud sound (105dB); avoid prolonged exposure to prevent hearing damage.
3. Product Overview
The Acousto-Optic Alarm is a robust security device designed for both home and outdoor use. Its primary components include the main housing, an acousto-optic sensor, and an internal tamper switch.

Figure 3.1: Front view of the Acousto-Optic Alarm. The device features a white plastic casing with a prominent blue dome at the top, which houses the acousto-optic sensor and light components. The overall shape is rectangular with rounded edges.
Key Features:
- Acousto-Optic Detection: Triggers alarm based on sound or light changes.
- Anti-Tamper Function: Activates siren and flash if the casing is opened.
- High Decibel Alarm: Produces a 105dB siren.
- Backup Battery: Includes a 6V / 600mA backup battery for continuous operation.
- Durable Design: Suitable for outdoor installation.
4. Setup and Installation
Follow these steps for proper installation of your Acousto-Optic Alarm.
- Choose Location: Select a suitable outdoor or indoor location that provides optimal coverage and is protected from direct impact. Ensure the location allows for clear sound and light detection.
- Mounting: Securely mount the alarm to a wall or sturdy surface using appropriate screws and anchors (not included). Ensure the device is level.
- Wiring: Connect the power supply (9-15V) to the designated terminals inside the alarm unit. Observe correct polarity.
- Backup Battery Installation: Install the 6V / 600mA backup battery into its compartment. This ensures continued operation during power outages.
- Close Casing: Carefully close and secure the alarm casing. Ensure the tamper switch is properly engaged.
- Initial Test: After installation, perform a test to ensure the alarm functions correctly. Trigger the alarm by simulating a sound or light event, or by intentionally activating the tamper switch (briefly open and close the casing).
5. Operating Instructions
The Acousto-Optic Alarm operates automatically once powered and configured.
Alarm Triggering:
- The alarm is designed to activate when its internal sensors detect significant changes in sound or light levels, indicating a potential security breach.
- Upon detection, the device will emit a loud siren (105dB) and activate its flashing light.
- The continuous alarm time is greater than 1 hour if the trigger condition persists.
Anti-Tamper Function:
- If the outer shell of the alarm is removed or tampered with, the built-in tamper switch will be triggered.
- This immediately activates the siren and flashing light, providing an additional layer of security against unauthorized access to the device itself.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your alarm system.
- Cleaning: Periodically wipe the exterior of the alarm with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Sensor Check: Ensure the acousto-optic sensor (blue dome) is clean and free from obstructions (e.g., dirt, spiderwebs) that could impair its detection capabilities.
- Battery Check: Although the backup battery is designed for extended use, it is recommended to check its charge periodically, especially after prolonged power outages. Replace if necessary.
- Functionality Test: Test the alarm's functionality monthly to confirm it is operating correctly.
7. Troubleshooting
If you encounter issues with your Acousto-Optic Alarm, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Alarm does not sound/flash. | No power; Sensor obstructed; Faulty wiring. | Check power supply and connections. Clean sensor. Verify wiring according to installation instructions. |
| Alarm sounds continuously or falsely. | Sensor sensitivity too high; Environmental interference (e.g., strong winds, loud noises, flickering lights); Tamper switch not fully engaged. | Relocate alarm if possible. Check for environmental factors. Ensure casing is securely closed and tamper switch is engaged. |
| Anti-tamper function not working. | Tamper switch damaged or misaligned. | Inspect the tamper switch for physical damage or misalignment. Ensure the casing closes properly to engage it. |
If the problem persists after attempting these solutions, please contact customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Product Name | Acousto-optic Alarm |
| Model Number | 7c503dc7788ba243a007692ee0a107 |
| Power Supply | 9-15V |
| Alarm Current | 200mA |
| Option Current | 5mA |
| Alarm Sound Level | 105dB |
| Backup Battery | 6V / 600mA |
| Continuous Alarm Time | >1 hour |
| Dimensions (L*W*T) | 20.1 x 11.2 x 6.8cm (7.9" x 4.4" x 2.7") |
| External Material | Plastic |
| Color | White & Blue |
| Net Weight | 274g |
9. Warranty and Support
For warranty information or technical support, please refer to the retailer or manufacturer's official website. Keep your purchase receipt as proof of purchase.
Manufacturer: Qtqgoitem
For further assistance, please contact your point of purchase.