Putting the Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown to Work
The Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown promises a vital safety upgrade to any system utilizing a generator and Fireboy-Xintex carbon monoxide (CO) detectors. It’s designed to automatically shut down a generator when a CO alarm is triggered, preventing potentially lethal CO buildup. I was keen to see if this seemingly simple module could deliver on its promise of enhanced safety and ease of integration.
My own need for this arose from a near-miss situation during a backcountry camping trip. A faulty generator exhaust, coupled with a poorly ventilated tent, led to a CO alarm activation. Luckily, we caught it in time. That experience highlighted the critical need for an automated generator shutdown system, and the Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown seemed like a viable solution.
Unboxing the module, my first impression was of its compact size and robust construction. The black plastic casing felt solid and well-sealed, suggesting good resistance to the elements, though time will tell. It’s a simple looking device, but sometimes simple is exactly what you want for reliability in critical safety systems.
Compared to universal relay modules requiring complex wiring schematics, the Fireboy-Xintex module is specifically designed for seamless integration with their CMD-5 CO alarms. I was also considering building my own system using generic relays and sensors, but the potential for error and the lack of certification swayed me towards a purpose-built solution. The alternative felt like reinventing the wheel, and safety isn’t an area where I’m willing to cut corners.
My initial reaction was cautiously optimistic. The module appeared well-made and the specified compatibility with my existing CO alarms was a significant plus. Hopefully the installation would be as straightforward as promised.
Real-World Testing: Putting Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown to the Test
First Use Experience
I tested the Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown at my off-grid cabin, which is powered by a generator. The installation was relatively straightforward, requiring basic wiring skills to connect the module to both the CO alarm and the generator’s shutdown circuit. I performed the install myself, referencing the included documentation and some online videos to ensure proper connections.
The initial tests involved simulating a CO alarm trigger to verify the generator shutdown functionality. The module performed flawlessly, cutting power to the generator within seconds of the alarm sounding. It gave me a sense of relief knowing that a potentially dangerous situation would be handled automatically.
Extended Use & Reliability
After several months of use, the Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown continues to perform reliably. There have been no false alarms or malfunctions. I periodically test the system to ensure its continued functionality, and it consistently passes with flying colors.
The module itself shows no signs of wear and tear, despite being exposed to temperature fluctuations and occasional humidity. I’ve found that simple visual inspections and periodic testing are sufficient for maintenance. Compared to my previous reliance on manual shutdowns, this system provides a much higher level of safety and peace of mind.
Breaking Down the Features of Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown
Specifications
The Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown has dimensions of 4.05″ x 2.1″ x 1.08″ (103mm x 54mm x 28mm). Its black color allows for discreet mounting. The Fireboy-Xintex module is designed specifically to interface with Fireboy-Xintex CMD-5 CO alarms.
These specifications ensure compatibility with existing systems and ease of integration, while the compact size allows for flexible mounting options.
Performance & Functionality
The primary function of the Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown is to automatically shut down a generator upon receiving a signal from a CO alarm. It does this quickly and reliably. Its main strength lies in its seamless integration with Fireboy-Xintex CO alarms.
The only potential weakness is its reliance on compatible Fireboy-Xintex CO detectors, limiting its use with other systems. But it’s performing excellently and exceeding expectations for the intended purpose.
Design & Ergonomics
The Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown features a simple, robust design. The black plastic casing feels durable and well-sealed. Installation is fairly straightforward, provided the user has basic wiring skills.
There’s a slight learning curve in understanding the wiring diagram, but it’s manageable. The module is intended for permanent installation, so the focus is on functionality over aesthetics.
Durability & Maintenance
The Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown appears to be built to last. The sealed casing provides protection against moisture and dust. Maintenance is minimal, requiring only occasional visual inspections and functional testing.
The lack of moving parts contributes to its long-term reliability. I expect it to last for many years with proper care.
Accessories and Customization Options
The Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown itself does not come with any accessories beyond the basic wiring connectors. There are no customization options available for the module itself. However, it’s essential to ensure compatibility with the specific generator model and CO alarm being used.
It’s designed to work seamlessly with the Fireboy-Xintex CMD-5 CO alarm series, and the generator shutdown circuit needs to be appropriately configured. No further customization is needed or expected.
Pros and Cons of Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown
Pros
- Automatic generator shutdown upon CO detection greatly enhances safety. This feature is critical for preventing CO poisoning.
- Seamless integration with Fireboy-Xintex CMD-5 CO alarms simplifies installation and ensures compatibility. Saves time and reduces the risk of wiring errors.
- Robust construction and sealed casing provide durability in demanding environments. Ensures long-term reliability.
- Compact size allows for flexible mounting options in various locations. Easy to find a convenient and accessible spot.
- Relatively easy installation for those with basic wiring skills, aided by clear documentation. A significant advantage over universal relay systems.
Cons
- Limited compatibility to Fireboy-Xintex CMD-5 CO alarms may require purchasing new detectors. Less flexible if you already have a different CO detector brand.
- Price Point at $179.99 may be perceived as high compared to DIY relay solutions. However, it’s the price for a tested system.

Who Should Buy Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown?
The Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown is perfect for:
- Individuals using generators in enclosed spaces like RVs, boats, or cabins.
- Anyone prioritizing safety and wanting an automated CO poisoning prevention system.
- Those already using or planning to use Fireboy-Xintex CMD-5 CO alarms.
Who should skip this product?
- Individuals who are comfortable building their own relay systems and don’t mind the potential safety risks.
- Those using CO alarms from other manufacturers and unwilling to switch to Fireboy-Xintex.
A must-have accessory is a properly functioning and regularly tested Fireboy-Xintex CMD-5 CO alarm. Also a clearly labelled generator shut-off switch is recommended for ease of access.
Conclusion on Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown
The Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown offers a valuable safety upgrade for anyone using generators in potentially hazardous environments. Its automatic generator shutdown function provides crucial protection against CO poisoning. The price is justified by the increased safety and ease of integration with existing Fireboy-Xintex CO alarms.
I would personally recommend this module to anyone seeking a reliable and automated CO poisoning prevention system, especially those already invested in the Fireboy-Xintex ecosystem. Don’t compromise on safety; invest in the Fireboy-Xintex Optional Relay Control Module f/Generator Shutdown and breathe easier knowing you’re protected.
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