Sensitivity adjustment is not working for me. I follow the instructions, but when I press the button I hear the same 3 pitches.

Do this for step one: hold the unlock button for 6 seconds. In that 6 seconds you'll see the blue light around the lock symbol come on and go off then come back on (you'll also hear some tones but they're not important). It's when the blue light some back on at 6 seconds that you're in business. You can now follow instructions 2 thru 4. That's it.

Is the remote water waterproof???

We bougt the arlam to use indoors. It does say on the box that it is waterproof. Since it is a bike alarm that makes sense.

Will this keep the dogs away when I go fir a walk???

I don’t know if that would work or not. It is very loud and May startle the dog, don’t think it will chase a very aggressive dog away though.

could it be used to prevent catalytic converter thefts?

Not sure unless you just put it on the car in general then it may or may not work for that I keep it on my e-bike works perfectly for that.

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Fosmon Anti Theft Burglar Bike Alarm with Remote, Waterproof Vibration Triggered Battery Operated Loud 113dB Wireless Siren for Bicycle, E-Bike, Motorcycle, Scooter, Cart, Trailer, Equipment, Fence

Fosmon Anti Theft Burglar Bike Alarm with Remote, Waterproof Vibration Triggered Battery Operated Loud 113dB Wireless Siren for Bicycle, E-Bike, Motorcycle, Scooter, Cart, Trailer, Equipment, Fence

Product ID: 280129426

Details

Brand
Fosmon
Compatible devices
bicycles carts
Maximum range
90 Feet
Noise level
113 Decibels
Remote control included?
Yes

💧IP55 waterproof rating

📡90ft wireless remote range

🔊113dB ultra-loud siren

39280CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

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Description

🚨 Protect your ride like a pro—because your gear deserves the loudest guard in town!

SOS ACCIDENT ALERT - Automatic SOS beep triggers if your ride tilts over 45°, adding a life-saving layer of protection.
UNMATCHED THEFT DETERRENCE - 113dB alarm blasts instantly on vibration—your bike’s personal bodyguard.
VERSATILE SECURITY SOLUTION - Beyond bikes—perfect for scooters, trailers, fences, and even luggage. One alarm, endless peace of mind.
TAILORED SENSITIVITY CONTROL - 7 vibration levels & 3 volume settings let you customize security to your environment.
EFFORTLESS MULTI DEVICE SETUP - Pair up to 8 remotes and mount anywhere with adhesive or cable ties—security that adapts to you.

The Fosmon Anti Theft Burglar Bike Alarm delivers a piercing 113dB siren triggered by vibration, with adjustable sensitivity and volume levels for personalized security. Featuring a wireless remote with a 90-foot range and an SOS alert for accidents, this IP55 waterproof alarm is easy to install via adhesive or cable ties. Compatible with bikes, e-bikes, scooters, motorcycles, trailers, and more, it offers versatile protection backed by a limited lifetime warranty.

Specifications

ASIN	B07PQ92SHC
Audible Noise	113 Decibels
Best Sellers Rank	#114,854 in Automotive ( See Top 100 in Automotive ) #96 in Motorcycle Theft Protection
Brand	Fosmon
Compatible Devices	bicycles, e-bikes, scooters, motorcycles, carts, trailers
Compatible devices	bicycles, e-bikes, scooters, motorcycles, carts, trailers
Customer Reviews	4.4 out of 5 stars 6,548 Reviews
Global Trade Identification Number	00879565005795
Includes Remote	Yes
Item Weight	4 Ounces
Manufacturer	Fosmon
Maximum Range	90 Feet
Maximum range	90 Feet
Mfr Part Number	51087HOM
Model Number	51087HOM
Noise level	113 Decibels
Number of Items	1
Remote control included?	Yes
UPC	879565005795
Unit Count	1.0 Count

Reviews

S**R

Klasse Alarmanlage

Sehr gut sehr laut sehr empfindlich was gut ist. Benutze es überall wo geklaut werden könnte. Sowie im Rucksack am Meer, oder im Haus wenn Putzfrau kommt, am Motorrad und Fahrrad. Oder auch vor Fenster und Türen.

14.07.2026

R**Y

It’s loud

Only had it for two days. When tested it on my Fold 1 Plus it worked great. Mounted easily and was loud. Hope it will never have to be used. But I’m confident that it will work if needed. Good price and recommended.

9.06.2026

J**A

Satisfecho con el producto

Excelente producto

24.02.2026

F**W

Rower jest zabezpieczony - pozornie😉

Fajny gadżet moim zdaniem bardzo dobrze wykonany, kupiłem coś podobnego na aliexpress i nie było to w jakość jak jest tutaj. Generalnie fajnie się sprawdza chociaż wiadomo, że nie jest zabezpieczeniem doskonałym ale odstrasza potencjalnego złodzieja i chyba dlatego został zrobiony. Sygnał głośny. Czujnik ruchu wrażliwy. Zapewne przyda się jako odstraszacz amatorów nieswoich rowerów

13.08.2024

J**D

Litet alarm

Liten smidigt alarm

27.07.2026

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

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39280CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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