1. Introduction
The Jiawu Single Beam Infrared Beam Alarm is an advanced photoelectric infrared sensor designed for reliable outdoor and indoor security applications. This device features a fully sealed, dust-proof, and fog-proof integrated structure, ensuring normal operation in various environmental conditions. It is suitable for enhancing security in schools, office buildings, dormitories, homes, and commercial establishments.
This manual provides essential information for the proper installation, operation, and maintenance of your Jiawu Single Beam Infrared Beam Alarm.
2. Package Contents
Please verify that all items listed below are included in your package:
- 1 x Infrared Transmitter
- 1 x Infrared Receiver
- 2 x Short Screws
- 6 x Long Screws
- 6 x Screw Casings (Wall Plugs)

Description for visually impaired users: The image displays the two black infrared beam sensors, which are cylindrical with a flat top and bottom, alongside various screws and green plastic wall plugs. This illustrates all the components included in the product package.
3. Setup and Installation
Follow these steps for proper installation of your infrared beam alarm:
- Choose Installation Location: Select a location where the infrared beam will not be obstructed. The best installation height should be greater than 20cm (7.9 inches) from the ground. The installation distance between the transmitter and receiver should not be less than 1 meter.
- Mounting the Sensors:
- Ensure the infrared transmitter and receiver are placed vertically and on the same horizontal line for optimal beam alignment.
- Use the provided screws and screw casings to securely mount both the transmitter and receiver units to a stable surface.

Figure 3.1: Side view of the infrared sensors, highlighting their design for vertical mounting. Description for visually impaired users: The image shows two black infrared sensors viewed from the side. They are sleek and rectangular with rounded edges, indicating their compact design for discreet installation.
- Wiring: Connect the power supply (12-24V DC AC) to the units according to the wiring diagram (refer to the product's detailed wiring instructions, not provided in this manual). Ensure proper polarity.
- Alignment: Once mounted and powered, carefully align the transmitter and receiver. The hemispherical optical lens concentrates the beam, making accurate alignment crucial for effective operation.
4. Operating Instructions
The Jiawu Single Beam Infrared Beam Alarm operates by emitting an infrared beam from the transmitter to the receiver. When this beam is interrupted, the alarm system is triggered.
- Power On: After successful installation and wiring, apply power to the units.
- Beam Detection: The system continuously monitors the infrared beam.
- Alarm Trigger: If an object or person breaks the infrared beam, the receiver detects the interruption and sends a signal to your connected alarm system.

Description for visually impaired users: The image depicts two black infrared sensors positioned opposite each other in a dark, industrial-looking room. A thin red line, representing the infrared beam, connects the two sensors, illustrating the detection principle.
The alarm features a high-power infrared emission and a receiver tube with low-power processing technology. Its unique digital filter circuit design provides a high level of RFI (Radio Frequency Interference) and EMI (Electromagnetic Interference) immunity, minimizing false alarms.
5. Maintenance
To ensure the longevity and optimal performance of your Jiawu Single Beam Infrared Beam Alarm, follow these maintenance guidelines:
- Cleaning: Periodically clean the optical lenses of both the transmitter and receiver units with a soft, dry cloth. Avoid abrasive cleaners that could scratch the lens surface.
- Environmental Protection: The device is designed with a fully sealed, fog-proof, and dust-proof structure. However, extreme weather conditions or prolonged exposure to heavy debris may require more frequent inspection and cleaning.
- Alignment Check: Occasionally verify that the transmitter and receiver remain perfectly aligned. Misalignment can lead to reduced sensitivity or false alarms.
6. Troubleshooting
If you encounter issues with your infrared beam alarm, refer to the following common problems and solutions:
- No Alarm Trigger:
- Check Power: Ensure both units are receiving adequate power (12-24V DC AC).
- Verify Alignment: Confirm that the transmitter and receiver are perfectly aligned. Even slight misalignment can prevent beam detection.
- Obstructions: Check for any physical obstructions blocking the beam path.
- Clean Lenses: Dirty lenses can impair beam transmission and reception. Clean them as described in the Maintenance section.
- False Alarms:
- Environmental Interference: While designed for strong anti-interference, extreme fog, heavy rain, or direct strong sunlight/car headlights might occasionally affect performance. The automatic strong light adjustment system helps mitigate this.
- Vibrations/Movement: Ensure the mounting surfaces are stable and not subject to vibrations that could cause temporary misalignment.
- RFI/EMI: Although the device has high RFI/EMI immunity, ensure it is not installed too close to strong sources of electromagnetic interference.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | Jiawu |
| Model Number | Jiawucwgen9royv5701 |
| Material | ABS |
| Color | Black |
| Technology | Infrared |
| Receiving Range | ≤15m (49.2ft) |
| Infrared Frequency | 1.92KHz |
| Working Voltage | 12-24V DC AC |
| Maximum Range | 50 Feet |
| Mounting Type | Door Mount |
| Item Weight | 4.6 ounces |
| Application System | Vehicle Guardrail System, Sidewalk Gate System, Factory Warehouse, Hotel Villa, Family Doors and Window, Etc. |
8. Warranty and Support
Warranty information for the Jiawu Single Beam Infrared Beam Alarm is not explicitly provided within this manual. Please refer to the product packaging, your purchase receipt, or contact the manufacturer directly for details regarding warranty coverage and terms.
For technical support or further assistance, please visit the official Jiawu website or contact their customer service department. Contact information can typically be found on the product packaging or the manufacturer's website.