Alarm Doctor
Basel diagnoses the alarm faults others give up on — including pet sensor interference traced to other household devices.
The standout case involves multiple return visits to resolve pet sensor false alarms, eventually tracking the cause to infrared interference and swapping in shielded PIRs at no apparent escalation in cost. Phone-based troubleshooting is also a recurring thread: several customers had their issues resolved without a callout, which matters if you're after quick guidance before committing to a visit. The small sample we reviewed skews five-star, and with only 2.2% of total reviews visible, it's worth reading further into the full Google listing before making a final call — but what's here paints a consistent picture of a technically engaged operator who doesn't deflect.
Their work
What it's like working with them
Based on a sample of Google reviews (229 total)
“walked me through the process clearly and calmly”
What they help with
Based on what their customers hired them for
How they stack up
Context from 160 security & cctvs in Parramatta
Credentials & background
Sourced from 4 public records so you don't have to look them up yourself
About Alarm Doctor
Basel leads the Alarm Doctor team and appears across multiple reviews as the primary technician and point of contact — he's specifically praised for walking customers through troubleshooting over the phone, diagnosing obscure faults like infrared interference triggering pet-sensitive PIR sensors, and resetting legacy systems that haven't been touched in years. William also features in the more complex on-site work, particularly where recurring faults required return visits and sensor replacements. The business leans heavily into repair and revival of existing alarm systems rather than new installations — forgotten codes, dead backup batteries, sensor drift, and brand-specific faults on DSC and Bosch panels are the kinds of problems customers bring to them. What separates them from a standard alarm company is the willingness to keep diagnosing after the initial fix doesn't hold: one customer describes multiple return visits at no apparent extra charge until shielded PIRs finally eliminated false triggers on a pet. For homeowners who've inherited an old system or are dealing with an alarm that's misbehaving in ways other technicians couldn't pin down, that persistence is the clearest differentiator. Based in Parramatta and operating for close to two decades as a registered company, they handle both phone-based support and on-site work across the residential space.
Best for: diagnosing and repairing legacy alarm systems inherited from previous owners, troubleshooting recurring sensor faults that other technicians haven't resolved, and phone-based support for homeowners trying to identify an alarm fault before committing to a callout.
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Claim This Profile — Free →Common questions about Alarm Doctor
Can Alarm Doctor help with an old alarm system I've inherited from a previous owner?+
Based on what customers describe, this appears to be a core strength. One reviewer detailed a system with forgotten codes, a dead backup battery, faulty sensors, and years of disuse — Basel and William restored it to working order and updated components where needed. If you've moved into a home with an existing alarm you can't operate or don't trust, this is the kind of job they seem well suited for. Call them with the panel brand and model if you have it — they work with at least DSC and Bosch systems based on reviewed jobs.
Does Basel offer phone-based support before booking an on-site visit?+
Several customers specifically mention Basel talking them through alarm faults over the phone until the issue was resolved — without needing a callout. This seems to be part of how the business operates rather than a one-off. If you're dealing with a nuisance alarm or a panel fault and aren't sure whether you need a technician on-site, calling first to describe the problem appears to be a viable approach. It's worth confirming when you call whether phone support is available for your specific fault type.
What happens if the initial fix doesn't solve the problem?+
One detailed review describes multiple return visits after pet sensors continued triggering false alarms following the initial repair. Rather than attributing it to user error or pushing a paid upgrade, Basel and William continued investigating, eventually diagnosing infrared interference from other household devices and replacing the sensors with shielded PIRs. That level of follow-through is explicitly called out as unusual by the customer. It's worth asking upfront how return visits are handled if a fault persists, so you know what to expect before work begins.
Does Alarm Doctor service pet-friendly alarm systems?+
Yes — at least one reviewed job involved replacing standard PIR sensors with pet-friendly alternatives, and then further refining the setup when those sensors produced false alarms triggered by a small dog. The eventual solution involved shielded PIR sensors to eliminate infrared interference. If you have pets and need a reliable motion detection setup, this is a job type they've navigated in practice, not just in theory. Mention your pet's size and weight when you call, as sensor calibration is often animal-specific.
What areas does Alarm Doctor cover from their Parramatta base?+
The business is based in Parramatta in western Sydney. Reviews don't specify the exact coverage radius, so it's not possible to confirm service boundaries from the available data. If you're in greater western Sydney or surrounding suburbs, it's worth calling directly to confirm whether your area is within their service zone. Given the mix of phone support and on-site work they offer, some issues may be resolvable remotely regardless of your location.