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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These are great! I unfortunately had to return them because my dog is 45 pounds and they’re too big for her. She couldn’t carry them constantly in her mouth. But the quality, colors, squeak, and bouncy effects are perfect for playful dogs or simply getting your dog to play more. I’m going to see if they have smaller sizes available. Great value too!

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Reviewed in the United States on March 24, 2026

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Carla Tibbetts

Phoenix, US

★★★★★ 4

Not for chewers

Size: Medium Set of 6

Not for chewers, but I bet non chewers would like the. Good quality, bounce, fun color and texture. Fun while it lasted, but didn't last long with my 2 year old pitbull. We've been trying to find the replacement to his durable spiky ball that went down a sewage drain. Right now the Chuck-Its are the ones that last (minus just one)

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Reviewed in the United States on October 8, 2025

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Pam Cunningham

West Palm Beach, US

★★★★★ 5

Almost Indestructible!

Size: Medium Set of 6

My dog LOVES these balls, and it's all about the squeaker (which my husband hates). The size is great and I don't worry about it getting lodged in her throat. They are very durable too. We had one lone ball for YEARS and I forgot it ever squeaked, but it was still in tact. I searched for a replacement because I was so impressed with it. Very happy to have found it. I just ordered some for my son's dog too. The squeaker may eventually come loose, but it's worth the money to buy again!

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Reviewed in the United States on January 9, 2026

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Terri C

Port Orchard, US

★★★★★ 5

Dog likes

Size: Medium Set of 6

My shepherd loves these.She loves a good squeak in a ball.Nice and lightweight.

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Reviewed in the United States on May 28, 2026

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Amazon Customer

Carnegie, US

★★★★★ 5

The most durable and fun dog toy of all

Size: Medium Set of 6

Most durable and fun toy of all. The only thing that I have found that can destroy these balls is a lawnmower. Probably good for keeping teeth clean too.

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Reviewed in the United States on April 30, 2026