False Security Alerts? We'll Stop the Crying Wolf in Shirley

A false alert is a sensor reporting something that is not what it was installed to detect. Motion detectors responding to pets or heat, contact sensors reporting doors that have not opened, cameras flagging shadows and headlights — each type has its own failure modes, and each failure mode has a cause that can usually be found and fixed. The goal of the visit is not just to stop the alerts but to make sure the ones that remain are trustworthy again.

Why sensors trigger falsely

Motion sensors are the most frequent offenders, and the causes are physical: a sensor pointed at a radiator, a window with changing sunlight, a curtain moving in a draught, or a hallway a cat crosses at night. Pets deserve special mention — many sensors have pet-resistant modes and mounting heights, but they must be chosen and positioned correctly, and an ordinary sensor at the wrong height will report every cat as an intruder. Contact sensors false-report when their two halves drift out of alignment, when magnetic mounts loosen, or when batteries sag. Cameras false-alert on anything their motion detection treats as movement — trees, rain, light changes — unless detection zones and sensitivity are configured properly.

How we diagnose it

We start with the pattern: which sensor, what time of day, how often. Patterns are informative — a hallway sensor that fires at dusk points at sunlight, one that fires overnight points at a pet or a draught. We then check each suspect sensor's mounting, alignment, battery and sensitivity settings, and we test deliberately: walk the sensor's field, and if relevant, let the pet do the same. Where settings are wrong, we correct them; where placement is wrong, we reposition the sensor rather than numbing its sensitivity, because a desensitised sensor is its own security risk.

The tempting wrong fix

The instinctive response to false alerts is to turn sensitivity down, disable the sensor, or mute notifications — and all three weaken your security to solve an annoyance. We will not recommend disabling sensors or stripping alert settings as a fix. The honest approach is to find what the sensor is actually responding to and address that, so the sensor keeps doing its job and stops doing someone else's.

Honest limits

Some environmental causes — a very draughty room, direct low sun, a busy road reflected in a window — may mean a sensor's position can never be fully reliable, and moving it or changing its type is the real answer. We will say so plainly rather than selling adjustments that will not hold. We also cannot guarantee that a manufacturer's detection algorithm will never misfire; we can configure it sensibly and honestly within its limits.

Aftercare

After the fix, keep a brief log of any false alerts for a fortnight: which sensor, what time, what was happening. If a pattern persists, tell us — it points at a residual cause worth another look rather than a system you have to tolerate.

Booking

Book through the Maintenance Men website or by phone, and tell us which sensors are false-triggering, how often, and whether you have pets. If you can recall the times of day the false alerts arrive, that alone often narrows the cause considerably.

Making alerts trustworthy again

The real goal of a false-alarm repair is not silence; it is trust. When alerts stop crying wolf, you start reading them again, and the system does the job you installed it for. That is why we resist the shortcut of desensitising sensors to the point of uselessness — a motion detector that ignores genuine movement is not a fix, it is a different fault. After our visit, expect the system to be quiet about the things that do not matter and prompt about the things that do. If it is not, tell us, because that means a cause is still hiding.