Is Your Bosch Motion Detector Too Sensitive? Here’s How to Fix It
A Bosch security system provides top-tier protection, but its effectiveness can be compromised if the motion detectors are overly sensitive. Frequent false alarms are not only annoying; they can lead to complacency, causing you to ignore a real security event. They can also result in fines if your system is professionally monitored and dispatches emergency services unnecessarily.
If you're being bombarded with notifications from moving shadows, pets, or other minor disturbances, it's time to fine-tune your system. This guide will help you understand why your Bosch motion detector is being triggered and what you can do to fix it.
## Understanding Why False Alarms Happen
Bosch motion detectors primarily use passive infrared (PIR) technology. They don't 'see' movement but rather detect the heat energy emitted by objects, like a person, in their field of view. A false alarm occurs when the sensor interprets a rapid change in heat or infrared energy as a potential intruder.
Common culprits include:
- Pets: Cats or dogs moving within the sensor's range.
- Direct Sunlight: A sunbeam moving across the floor can cause a rapid temperature change.
- Heat Sources: Air vents, radiators, or portable heaters cycling on and off.
- Moving Objects: Curtains, balloons, or plants moving due to air currents.
- Insects: A spider crawling directly across the sensor's lens.
## Step 1: Optimise the Sensor's Environment and Placement
Before you adjust any settings, ensure the sensor is installed in an optimal location. Correcting a poor placement can often solve the problem entirely.
- Check the Location: The sensor should be mounted on a stable, vibration-free surface.
- Ideal Height: Place the sensor at the height recommended in its installation manual, typically around 7.5 feet (2.3 m).
- Avoid Heat Sources: Ensure the sensor is not pointed directly at heating vents, radiators, fireplaces, or kitchen appliances.
- Block Direct Sunlight: The sensor's field of view should not cover windows that receive direct sunlight. If this is unavoidable, consider closing blinds or curtains when you arm the system.
- Secure Moving Objects: Make sure there are no balloons, hanging plants, or curtains that can be moved by a draft from your HVAC system.
## Step 2: Adjusting Sensitivity Settings
If the environment is clear, the next step is to adjust the sensor's sensitivity. The method for this varies depending on your specific Bosch alarm panel and sensor model.
### For Systems with App Control (e.g., Bosch Easy Series, Remote Security Control App)
Modern Bosch systems often allow for easy configuration through their companion app.
- Open your Bosch security app.
- Navigate to the "Devices" or "Sensors" section.
- Select the motion detector you wish to adjust.
- Look for a "Sensitivity" or "Profile" setting. You may see options like "High," "Standard," or "Pet Friendly."
- Action: Lower the sensitivity one level at a time. For example, if it's on "High," change it to "Standard." If you have pets, select the "Pet Friendly" or "Pet Immunity" option if available.
### For Traditional Keypad Programming
Older or more traditional Bosch panels, like the Solution Series, often require programming through the keypad. This process can be more complex.
- Enter Programming Mode: You will need the installer code (not your regular user code) to access the programming menu.
- Navigate to Sensor Settings: You will need to navigate through the menu to the specific zone that corresponds to the problematic motion sensor.
- Adjust Sensitivity: Within the zone's settings, you should find an option to adjust sensitivity, often called "Sensor Profile" or similar. You might have options like pulse count or different sensitivity levels.
- Action: It is highly recommended to consult your system's installation manual or contact your security installer for this step. Incorrect programming can disable the sensor or compromise your security.
## Step 3: Consider a Pet-Friendly Sensor
If you have pets and your current sensor doesn't have a pet-friendly setting, the most reliable long-term solution is to upgrade the sensor itself. Bosch manufactures specific "Pet Friendly" motion detectors that are intelligently designed to distinguish between the heat signature of a human and that of a small animal, significantly reducing pet-related false alarms.
By carefully reviewing the sensor's placement and adjusting its sensitivity, you can dramatically reduce the number of false alarms and restore confidence in your Bosch security system.