St John G5
Semi-automatic: You press the flashing shock button when the unit tells you to. The final decision stays with the responder.
Automatic: The unit counts down and delivers the shock by itself once it tells you to stand clear. There is no button to press.
The G5 enables you to save a life with clear voice prompts and real-time CPR feedback. Built for durability and available in fully or semi-automatic models, it performs daily self-tests to ensure it's always ready.
Not sure which model to choose? Read our guide to semi-automatic vs fully automatic defibrillators.
Overview
Overview
The confidence to step in when it matters most
You don't need to be a paramedic to save a life. The G5 guides you through every step of a cardiac rescue—from pad placement to chest compressions—with clear voice prompts and real-time feedback. Whether you choose the fully automatic model (which delivers the shock for you) or the semi-automatic (where you press the button), the G5 gives you the support to act decisively when someone's life is on the line.
CPR feedback that makes a difference
Intellisense CPR (ICPR) technology monitors every compression you deliver and coaches you in real time. Too shallow? It tells you. Wrong pace? It corrects you. It's precise, guideline-driven feedback that helps rescuers of all skill levels perform high-quality CPR. The RescueCoach® system advances at your pace, ensuring you complete each step before moving on.
Built ready, stays ready
The G5 runs daily self-tests to check pads, battery, and internal systems, so you'll know immediately if anything needs attention. The Rescue Ready® indicator gives you at-a-glance status: green means go. Tested to military standards and rated IP55 for dust and water, this device handles extreme temperatures, high altitudes, and rough conditions.
What's in the box
Your G5 arrives ready to deploy, the defibrillator unit, non-polarised Intellisense™ adult pads with ICPR feedback, and a lithium battery with four-year shelf life. Its backed by an eight-year warranty and Australia's most trusted first aid provider.
Always follow the directions for use. In an emergency call Triple Zero (000).
Specifications
Specifications
Weight: 2.6kg (with battery)
Operation mode: Fully automatic or semi-automatic (select variant)
IP rating: IP55
Battery shelf life:Up to 4 years from date of manufacture
Pad shelf life:Up to 2 years from date of manufacture
Data storage: 90 minutes via USB
Warranty: 8 years
ARTG ID: 524737
Shipping & Delivery
Shipping & Delivery
Shipping rates: Flat $10 metro · $15 regional & interstate · Free on orders $199 & over · $25 for heavy items (regardless of order total).
Dispatch: Orders placed before 10am Perth time ship next business day.
Delivery partner: We use Australia Post (or their agents) for all WA and Australian deliveries. Large items like medical stretchers go via courier.
Tracking: You'll receive an email or SMS with tracking details once your order is picked up from our warehouse.
Delivery times: Check Australia Post for current timeframes—external factors may cause delays beyond our control.
*Flat rate shipping applies to online orders only. WA and Australian deliveries only—no international shipping available.
Item code:SKU:5739
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What sets the G5 apart
Up to 8 year warranty
Australian voice guidance
Resistant rugged design
Live CPR feedback
Semi-automatic vs fully automatic defibrillator
One small difference, two models. Here's how to pick the right one.
Learn more
The defib does the shock. You do everything else.
What the G5 can't do on its own, and why people make the difference.
Learn more
St John Safe workplace assessment
Is your workplace first aid ready? Get a free St John Safe assessment
Learn more
Do I need a defibrillator at my workplace?
The short answer: probably yes. The longer answer depends on your workplace
Learn more
Technology that coaches you through every compression, every decision, every second.
Intellisense® pads
Communicates vital information directly to the defib.
LCD video screen
Step-by-step video instructions show you exactly what to do in real time.
AED Ready Kit
Rugged, reliable, and ready wherever you need it.
A defibrillator only works if it's ready when you need it. The G5's daily self-testing, rugged build, and long-life consumables mean you can trust it to be there—without question.
Fully or Semi-Automatic
Intellisense CPR (ICPR)
Daily Self-Testing
Shop St John G5 Supplies
Trusted for over 130 years
We're the first aid experts
Local and ready to help
Speak to our local support team
State-wide delivery
Shipping Metro and Regional
Free & fast shipping
On orders $199 and above*
*T&Cs apply. $450 discount applies to the St John G5 Automatic and Semi-Automatic Defibrillators. Offer ends 31 October 2026.
