Ajax Outdoor Detection · Brisbane

Stop Intruders Before They Reach Your Door.

Ajax wireless perimeter alarm installation across Brisbane, Gold Coast, and Sunshine Coast. Outdoor motion detectors, 113dB sirens, photo verification, pet immunity, and smartphone alerts — stopping intruders at the boundary, not the doorway.

Book Free Site Assessment Call 0490 130 339
NDAA-Approved
Free Assessment
15+ Years
QLD Licensed
Ajax MotionProtect Outdoor wireless perimeter motion detector installed at a Brisbane home
Perimeter Armed
All zones secure
113 dB
Outdoor Siren
Pet Immune
Up to 20kg

Grade 2 Certified

EN 50131 Standard

5.0★ Google

190+ Reviews

15+ Years

Outdoor Installs

IP55/IP56 Rated

Built for QLD Weather

Ajax MotionProtect Outdoor PIR motion detector with anti-masking and pet immunity
Wide-Area Detection

MotionProtect Outdoor

Wireless PIR motion detector with anti-masking and pet immunity. Covers a wide wedge from a single wall mount, filtering animals, insects, rain, and heat haze through the Ajax LISA two-step algorithm.

Detection range3–15m adjustable
Pet immunityUp to medium-sized animals
Weather ratingIP55 · -25°C to +60°C
Battery lifeUp to 5 years
Radio protocolJeweller encrypted, 1,700m range
Best For

Yards, courtyards, side paths, broad commercial perimeters. One per yard wall covers a residential block.

Ajax DualCurtain Outdoor bidirectional perimeter motion detector protecting a driveway
Bidirectional Boundary Line

DualCurtain Outdoor

Two independent optical systems in one housing — one device, both directions. Mounted in the middle of a fence or wall, it covers a 30m line (15m each side) using the ELSA algorithm, which requires both sensors to agree before triggering. A Near-Area downward sector catches the blind spot directly below.

Detection range30m total (15 + 15m)
Beam shapeNarrow curtain + Near Area below
False-alarm filterELSA dual-sensor consensus
Battery lifeUp to 4 years
Tamper / jammingHub alert within 1 minute
Best For

Long fences, side walls, balcony lines, window-row protection. One unit watches both directions simultaneously.

Ajax MotionCam Outdoor PIR motion detector with built-in HDR camera for photo verification
Photo-Verified Detection

MotionCam Outdoor

Wireless PIR motion detector with a built-in HDR camera. Every alarm triggers a 2–5 image series delivered to the Ajax app in about 9 seconds — so you and your monitoring partner can visually confirm a real threat versus a false alarm before anyone is dispatched.

DetectionDual PIR with LISA filtering
CameraHDR with IR backlight, 2–5 photo series
Photo delivery~9 seconds to Ajax app
Weather ratingIP56 · -25°C to +60°C
Radio protocolJeweller + Wings, 1,700m range
Best For

Holiday homes, small commercial premises, anywhere verified response matters. Photo evidence from the moment of trigger.

See How It Works

AJAX Outdoor Detection In Action

Watch the LISA algorithm and MotionCam photo verification working in real-world conditions.

AJAX LISA Algorithm

How LISA Filters False Alarms

The LISA two-step algorithm analyses motion in two consecutive frames. Animals, wind, rain, and heat haze are filtered out — only human-sized movement triggers the alarm.

Official AJAX

MotionCam Outdoor — Photo Verification

Official AJAX demonstration showing how outdoor sensors detect intruders and deliver photo evidence to your phone in seconds.

Ajax DualCurtain Outdoor beam coverage diagram showing residential perimeter protection
How It Works

From Detection To Response In Seconds

1

Boundary Crossed

Intruder enters the detection zone. Dual PIR sensors confirm human-sized movement using the LISA or ELSA algorithm.

2

Instant Alert

Hub triggers in 0.15 seconds. StreetSiren fires 113dB. MotionCam captures photo series. Push notification hits your phone.

3

Visual Verification

You see the photos in under 9 seconds. Confirm real threat or dismiss false alarm — before police or security are dispatched.

4

Evidence Secured

Full event log with timestamped photos stored in Ajax Cloud. QPS evidential-quality footage from the moment of trigger.

Real Customer Footage

Our Systems Actually Catching People

Real footage from real Mr Secured clients — not demos, not stock video.

BrisbaneAJAX

Prowler Flees After Siren

AJAX MotionCam detected an intruder — active siren sent them running.

Gold CoastChannel 9

Thieves Caught — Today Show

Crystal-clear footage featured on Channel 9's Today Show.

S. CoastDahua 8MP

Package Thief Identified

Delivery driver caught taking a parcel — identified instantly.

"From my very first discussion with Jarrod I knew he was the guy we needed. He re-programmed our entire setup and installed new Ajax video sirens. My girls all feel extremely safe. FIRST CLASS!"

GC
Greg Catton
Verified Google Review
Common Questions

Perimeter Alarm FAQs

What is a perimeter alarm system?
A perimeter alarm detects intruders at the boundary of your property — before they reach doors or windows. It combines outdoor motion sensors, wireless detectors, and high-powered sirens to create a protective barrier around your home or business. When triggered, the system immediately sounds a 113dB siren and sends a push notification with photos to your phone.
How loud are the outdoor sirens?
The Ajax StreetSiren reaches 113 decibels — comparable to a chainsaw at close range. Clearly audible for several hundred metres. This is the primary deterrent: most opportunistic intruders leave within seconds of the siren activating.
Can perimeter sensors tell the difference between pets and intruders?
Yes. Ajax MotionProtect Outdoor uses dual PIR technology with the LISA algorithm to distinguish between small animals and human-sized movement. Pet immune up to 20kg. DualCurtain Outdoor uses the ELSA dual-sensor consensus algorithm which requires both optical systems to agree before triggering — virtually eliminating false alarms from wildlife.
What is photo verification on outdoor sensors?
The Ajax MotionCam Outdoor has a built-in HDR camera that captures 2–5 photos the moment motion is detected. Photos are delivered to your phone in about 9 seconds via the Wings protocol. You can visually confirm whether it's a real intruder or a false alarm before dispatching police or security — saving time, money, and unnecessary stress.
Can I combine perimeter alarms with CCTV cameras?
Absolutely — and we strongly recommend it. When a perimeter sensor triggers, your CCTV cameras can automatically start recording and push footage to your phone. Ajax systems integrate directly with Dahua and Hanwha cameras that Mr Secured installs. One app controls everything.
How long do outdoor sensor batteries last?
Ajax outdoor sensors use long-life lithium batteries: MotionProtect Outdoor up to 5 years, DualCurtain Outdoor up to 4 years, MotionCam Outdoor up to 3 years. The Ajax app shows current battery levels in real time and alerts you well in advance when replacement is needed.
Do outdoor sensors work in Queensland heat and storms?
Yes. All Ajax outdoor sensors are rated IP55 or IP56 and operate from -25°C to +60°C. The LISA and ELSA algorithms are specifically designed to filter environmental false alarms — swaying trees, heavy rain, heat haze, and storm activity. Built for Queensland conditions.
Do I need professional monitoring?
It's optional but recommended for properties that are often unoccupied. With monitoring, a trained operator can view your MotionCam photos and CCTV footage when your alarm triggers and dispatch security if required. Without monitoring, you still get full push notifications and photo verification on your phone — most of our residential clients self-monitor via the Ajax app.
Build Your Ecosystem

Complete Your Security System

AJAX Indoor Alarms

Complete your perimeter with indoor protection — MotionCam, DoorProtect, KeyPad, and Hub 2 for full coverage inside and out.

Explore Alarms

Premium 4K CCTV

Pair perimeter alarms with Dahua 8MP cameras. When a sensor triggers, cameras automatically record — visual evidence from every angle.

Explore CCTV

Commercial Perimeter

Warehouse fences, construction sites, loading docks — commercial perimeter detection at scale with multi-zone management.

Explore Commercial
Get Started

Book a Free Perimeter Walk-Through

We walk every fence line, gate, and approach with you, identify the actual risk points, and quote a system that fits your property — not a template. 30-minute on-site consultation, zero obligation.

Book Free Assessment Call 0490 130 339

CCTV Installation — Brisbane Suburbs

Gold Coast

Sunshine Coast

Ipswich & Logan

Commercial Security — Service Areas

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QLD Security Provider Licence - Class 2 - Licence No. 4546326 - Jarrod Edwards

Licensed, Insured & ASIAL Accredited

QLD Security Provider Licence · Class 2 · No. 4546326

ASIAL Member · $20M Public Liability — Security Installation Cover

Mr Secured Pty Ltd · ABN 63 663 085 505

Brisbane suburbs we service for perimeter alarm installation

Mr Secured installs Ajax outdoor perimeter alarms across South-East Queensland — driveway beams, photoelectric curtains, MotionProtect Outdoor sensors, and dual-tech sirens. Click your suburb for local install details.

Brisbane — inner & middle ring

Bayside & Redlands

South & West Brisbane

North Brisbane & Moreton Bay

Ipswich

Gold Coast

Sunshine Coast

Don't see your suburb? Mr Secured services all of South-East Queensland from Caboolture to Coolangatta. Call 0490 130 339 or request a free on-site quote.