1. Introduction
The Avidsen Mini Alarm Kit 100112 is a compact security solution designed to detect unauthorized movement within a designated area. This kit features a PIR (Passive Infrared) surveillance unit with an integrated 105dB siren and two remote controls for convenient activation and deactivation. It is ideal for protecting indoor spaces by alerting occupants to intrusions.
2. Package Contents
Please verify that all items listed below are present in your package:
- 1x PIR Surveillance Unit (requires 4x 1.5V AA batteries, not included)
- 2x Remote Controls (each with 3x 1.5V LR44 button batteries, included)
- 1x Wall mounting bracket
- Screws for mounting
3. Setup
Follow these steps to set up your Avidsen Mini Alarm Kit:
3.1. Battery Installation (PIR Unit)
- Locate the battery compartment on the back of the PIR surveillance unit.
- Open the compartment cover.
- Insert 4x 1.5V AA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
3.2. Battery Installation (Remote Controls)
The remote controls come with pre-installed 1.5V LR44 button batteries. If replacement is needed, carefully open the small compartment on the back of the remote and replace the batteries, observing polarity.
3.3. Mounting the PIR Unit
The PIR unit can be placed on a flat surface or mounted on a wall. For optimal performance, consider the following:
- Placement: Choose a location that allows the unit to cover the desired area. The unit has a 110-degree detection angle and can detect movement up to 5 meters away.
- Avoid: Direct sunlight, heat sources, and areas with strong air currents (e.g., near air conditioners or windows) to prevent false alarms.
- Wall Mounting: Use the provided bracket and screws to securely attach the unit to a wall. Ensure it is positioned at an appropriate height for effective detection.

Image 1: Avidsen Mini Alarm Kit components, showing the PIR unit and remote controls. The PIR unit is white with a sensor lens, and the remote controls are compact with buttons.
4. Operating Instructions
The Avidsen Mini Alarm Kit is simple to operate using the provided remote controls.
4.1. Arming the Alarm
To arm the alarm system:
- Press the 'Arm' button (often depicted with a locked padlock icon) on your remote control.
- The PIR unit will emit a short beep to confirm that it is armed.
- Allow a brief delay (typically 10-15 seconds) for the alarm to become fully active and the sensor to stabilize.
4.2. Disarming the Alarm
To disarm the alarm system:
- Press the 'Disarm' button (often depicted with an unlocked padlock icon) on your remote control.
- The PIR unit will emit a short beep to confirm that it is disarmed.
4.3. Alarm Trigger
When the alarm is armed and motion is detected within its 110-degree, 5-meter range, the integrated 105dB siren will activate immediately. To silence the alarm, press the 'Disarm' button on the remote control.
5. Maintenance
Regular maintenance ensures the longevity and reliable operation of your alarm kit.
5.1. Battery Replacement
- PIR Unit: Replace the 4x AA batteries when the unit's performance degrades or if a low battery indicator (if present) is activated.
- Remote Controls: Replace the 3x LR44 button batteries in each remote control when the range decreases or the remote becomes unresponsive.
5.2. Cleaning
Wipe the exterior of the PIR unit and remote controls with a soft, dry cloth. Do not use liquid cleaners, abrasive materials, or solvents, as these can damage the device.
6. Troubleshooting
If you encounter issues with your Avidsen Mini Alarm Kit, refer to the following common problems and solutions:
- Alarm not arming/disarming:
- Check the batteries in the remote control and replace if necessary.
- Ensure the PIR unit has fresh AA batteries and is powered on.
- Verify that the remote control is within range of the PIR unit.
- False alarms:
- Adjust the placement of the PIR unit to avoid detecting pets, moving curtains, or objects affected by drafts.
- Ensure the unit is stable and not subject to vibrations.
- Avoid placing the unit near heat sources or direct sunlight.
- No detection when armed:
- Confirm the PIR unit is powered on and successfully armed.
- Check for any obstructions in the unit's field of view.
- Ensure the target area is within the 5-meter detection range.
7. Specifications
| Model | 100112 |
| Siren Volume | 105 dB |
| Detection Range | Up to 5 meters |
| Detection Angle | 110 degrees |
| PIR Unit Power | 4x 1.5V AA batteries (not included) |
| Remote Control Power | 3x 1.5V LR44 button batteries (included) |
| Placement | Indoor |
8. Warranty and Support
For detailed warranty information, technical support, or service inquiries, please refer to the official Avidsen website or contact your authorized retailer. Please retain your proof of purchase for any warranty claims.