Safe-T-Alert FX-4 Carbon Monoxide Alarm - 2-Pack [FX-4MARINE2-PACK]

Safe-T-Alert FX-4 Carbon Monoxide Alarm - 2-Pack [FX-4MARINE2-PACK]

Marsoni

M251S

$126.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Safe-T-Alert FX-4 Carbon Monoxide Alarm - 2-Pack [FX-4MARINE2-PACK]FX 4 Carbon Monoxide Alarm 2 Pack Marine Use Low Voltage Hard Wired Alarm. Replaces your CO alarms that are over 5 years old. No Bags. No Tags. Full 5 Year service life, longer than CO Sentinel CMD 4M alarms. CMD 4M and CMD 3M that have reached end of life. Features: Conforms To ANSI UL STD 2034 Marine Meets ABYC A 24. NMMA Listed Component Most Reliable Boats DC electrical system or marine grade batteries supply power to the alarm No missing or dead

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Love it!! I'm a Mac user and it's been wonderful. Zero connectivity issues. The size is perfect too, my hand is like 7.5inches I think, and it was just right. What knocked it out of the park is that I was able to get the buttons remapped with Karabiner-Elements, so now I have custom shortcut buttons!!! I also read on Reddit that it can be remapped with AutoHotKey for Windows ;) It's ergonomic, responsive and quiet, and it works great with Bluetooth. Being able to remap it has made it the most perfect and affordable vertical mouse. Hope it lasts forever, we'll see how it holds up over time!

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Reviewed in the United States on April 20, 2026

Verified Purchase

Lexington, US

★★★★★ 5

Durable, affordable, definitely buy it

Color: Purple

This fits so comfortably in my hand and I find that the layout of the clicker buttons is more efficient for me than a normal mouse. Tbh I don't use all of the functions but I know she's got more than I utilize. Moves smooth. For someone who has hand mobility issues or injuries (maybe even carpal tunnel?), this might be a better alternative than a normal computer mouse. It's good quality, durable, and I love the color options, I got purple/green with yellow. Super cute and worth the price. My husband got a $100 ergonomic mouse but I was not willing to pay that hefty price. 🤷🏻‍♀️

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Reviewed in the United States on May 4, 2026

Verified Purchase

Amy

Boise, US

★★★★★ 5

Happy with them

I'm putting up shelves around my bed for my books, and so far, the first shelf is holding nicely with these brackets. They seem pretty sturdy and were easy to install with the screws and anchors that came with it. I measured out where i wanted the brackets on the board and then screwed them to it. I then held it against the wall and used a level to make sure it was level, then put a screw in the middle bracket to hold it level while i marked the rest of the screw holes. I did this all by myself, but it would've been a lot easier to do with two people. I plan to buy more and put up more shelves

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Reviewed in the United States on September 3, 2024

Verified Purchase

William

Massapequa, US

★★★★★ 5

Nice & Sturdy

Got these for shelves in my garage. Nice and sturdy, a bit heavy but was exactly what I was looking for. Shipped fast

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Reviewed in the United States on September 25, 2025

Verified Purchase

Fix It Witham

Charlottesville, US

★★★★★ 5

Fantastic Product

I bought these hangers to mount my speakers. They are heavy duty, has a curl at the end to keep the speakers from falling off, and I was able to mount them and have clearance underneath. Awesome!!

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Reviewed in the United States on November 7, 2024