GasAlarm Systems’ Cellar Guard is a unique, fully compliant CO₂ safety solution designed specifically for cellars, cool rooms, and similar confined spaces.


Key Features

  • AS5034-2005 Compliant: Fully meets Australian standards for CO₂ monitoring in confined spaces.

  • All-in-One Central Unit: 240 VAC operation with an integrated CO₂ sensor, built-in alarm light, and siren to immediately alert staff when CO₂ levels become unsafe.

  • Door Entrance Module/Repeater: Install outside the entry door to warn staff before they enter the area.

  • Flexible System Expansion:

    • Easily add a second CO₂ sensor for larger cellars without needing a separate system.

    • Optional O₂ monitoring available for comprehensive safety.

    • Additional Door Entrance Modules can be installed for multiple entry points.


Simple DIY Self-Service Plan

Our unique self-service plan keeps your system fully operational and compliant with minimal hassle:

  1. Six-Month Reminder: We’ll remind you when it’s time to replace your sensor.

  2. Quick Replacement: Pay a service fee ($150+GST including postage) and a refundable deposit ($500+GST).

  3. Calibrated Sensor: Receive a certified, calibrated replacement sensor direct to your door.

  4. Easy Swap: Swap out the old sensor yourself—no technician required.

  5. Return & Refund: Send back the old sensor using the pre-paid satchel and get your deposit refunded.

  6. Ongoing Compliance: This hassle-free process repeats every six months to ensure your cellar stays compliant and safe.

A short instructional video for the self-service process is available here.


Protect your staff and your business with the trusted Cellar Guard CO₂ Alarm—safe, flexible, and easy to maintain.