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

💧Waterproof & vibration-triggered sensor

📡Wireless remote control (up to 8 remotes)

🔊113dB ultra-loud siren

€ 65.52

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

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Description

🚨 Stay a step ahead—secure your ride with Fosmon’s fierce 113dB shield!

SOS TILT DETECTION - Smart SOS alert triggers if your bike tilts over 45°, signaling emergencies beyond theft.
EFFORTLESS WIRELESS SETUP - Pair up to 8 remotes and mount easily with adhesive or cable ties—security made simple.
UNMATCHED 113 D B ALARM POWER - Instantly deters thieves with ear-piercing volume that commands attention.
VERSATILE MULTI USE SECURITY - Protect bikes, e-bikes, scooters, trailers, fences, and more with one sleek, compact device.
CUSTOMIZABLE SENSITIVITY VOLUME - Tailor 7 vibration sensitivity levels and 3 volume settings to your unique ride and environment.

The Fosmon Anti Theft Burglar Bike Alarm delivers a powerful 113dB wireless siren triggered by vibration, featuring adjustable sensitivity and volume levels, SOS tilt detection, and easy installation. Waterproof and compatible with multiple remotes, it offers versatile protection for bikes, scooters, trailers, and more, backed by a limited lifetime warranty.

Specifications

ASIN	B07PQ92SHC
Audible Noise	113 Decibels
Best Sellers Rank	#102,211 in Automotive ( See Top 100 in Automotive ) #88 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 6,520 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

G**U

Facile à poser et fait le job

Top, simple et efficace

29.06.2026

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

M**S

Good and loud

Good item good to be safe, quite loud

18.07.2026

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

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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