---
product_id: 125839720
title: "Fosmon 113db Bike Alarm with Remote, Motion Sensor Bicycle SOS Alarm, IP65 Waterproof Anti Theft Alarm System, Wireless Siren for E-Bike, Motorcycle, Scooter, Cart, Trailer"
brand: "fosmon"
price: "€ 29.77"
currency: EUR
in_stock: true
reviews_count: 13
category: "Fosmon"
url: https://www.desertcart.ie/products/125839720-fosmon-113db-bike-alarm-with-remote-motion-sensor-bicycle-sos
store_origin: IE
region: Ireland
---

# IP65 waterproof rating Wireless remote control (up to 8 remotes) 113dB ultra-loud siren Fosmon 113db Bike Alarm with Remote, Motion Sensor Bicycle SOS Alarm, IP65 Waterproof Anti Theft Alarm System, Wireless Siren for E-Bike, Motorcycle, Scooter, Cart, Trailer

**Brand:** fosmon
**Price:** € 29.77
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Fosmon 113db Bike Alarm with Remote, Motion Sensor Bicycle SOS Alarm, IP65 Waterproof Anti Theft Alarm System, Wireless Siren for E-Bike, Motorcycle, Scooter, Cart, Trailer by fosmon
- **How much does it cost?** € 29.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/125839720-fosmon-113db-bike-alarm-with-remote-motion-sensor-bicycle-sos)

## Best For

- fosmon enthusiasts

## Why This Product

- Trusted fosmon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **SOS Tilt Detection:** Automatic SOS alert triggers if your bike tilts over 45°, signaling emergencies fast.
- • **Effortless Wireless Setup:** Pair up to 8 remotes and install in minutes with adhesive or cable ties—no hassle, no wires.
- • **Unmatched 113dB Alarm Power:** Instantly deters thieves with ear-piercing volume that commands attention.
- • **Versatile Multi-Use Security:** Protect bikes, scooters, trailers, or even luggage with one sleek, waterproof device.
- • **Customizable Sensitivity & Volume:** 7 vibration sensitivity levels and 3 volume settings tailor security to your environment.

## Overview

The Fosmon 113dB Bike Alarm is a rugged, IP65 waterproof anti-theft system featuring a powerful 113-decibel siren, adjustable vibration sensitivity, and SOS tilt detection. Wireless and easy to install, it supports up to 8 remote controls and is perfect for securing bikes, e-bikes, scooters, motorcycles, and more, backed by a limited lifetime warranty.

## Description

Protect your bike, e-bike, scooter, or motorcycle with this loud 113dB vibration alarm that responds to motion and tilting, featuring adjustable sensitivity and volume.

Review: SOLID BIT OF KIT - Very sturdy and super loud! Just what you need. Had a similar model before but nowhere near as loud. Easy to install pull tab out and it’s ready to put wherever you want it. No idea how long battery life is, solidly made quite heavy for size.
Review: Great piece of kit - For a cheap little alarm this is great tells me when the local cats are on my scooter which is one of the reasons I bought it to stop the little blighters from getting under the cover and scratching my seat and also it’s a bit of a deterrent from light fingered people has different sounds and gets louder to her your attention well worth buying .

## Features

- [Loud 113dB Bike Alarm] Fosmon’s 113dB loud vibration bicycle alarm with remote control is a great tool to protect your bike from theft. Keep your bicycle, e-bike, scooter, motorcycle, and more secured with this alarm.
- [Vibration Sensor And SOS Alarm] When armed, this anti-theft bicycle alarm responds to vibration or being moved. You can manually adjust the 7 different sensitivity levels and 3 volume levels to best fit your setup. SOS function will detect an accident if the vehicle is tilted more than 45° from its original position, and then make a beeping sound to signal for help.
- [Easy To Set Up] This anti-theft vibration alarm is easy to set up. First, determine the mounting surface and clean accordingly. Then apply the provided adhesive or mount using the cable ties and brackets on the backside of the alarm. An alarm can be paired with up to 8 remotes.
- [Multi-Purpose Alarm] Use this anti-theft alarm for a variety of purposes: as a luggage alarm, fence alarm, trailer alarm, and more. This device works great as added security when used with locks as well.
- [Limited Lifetime Warranty] This product comes with a limited lifetime warranty. Please refer to Fosmon’s website for more information.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07PQ92SHC |
| Batteries | 3 AAA batteries required. |
| Best Sellers Rank | 3,887 in Automotive ( See Top 100 in Automotive ) 12 in Motorbike Theft Protection |
| Brand | Fosmon |
| Customer Reviews | 4.4 4.4 out of 5 stars (6,791) |
| Date First Available | 13 May 2019 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Item Weight | 113 g |
| Item model number | 51087HOM |
| Manufacturer | Fosmon |
| Manufacturer part number | 51087HOM |
| Product Dimensions | 9.5 x 4.19 x 2.29 cm; 113.4 g |
| Special Features | Waterproof, Wireless |

## Product Details

- **Brand:** Fosmon
- **Compatible devices:** bicycles, e-bikes, scooters, motorcycles, carts, trailers
- **Maximum range:** 90 Feet
- **Noise level:** 113 Decibels
- **Remote control included?:** Yes

## Images

![Fosmon 113db Bike Alarm with Remote, Motion Sensor Bicycle SOS Alarm, IP65 Waterproof Anti Theft Alarm System, Wireless Siren for E-Bike, Motorcycle, Scooter, Cart, Trailer - Image 1](https://m.media-amazon.com/images/I/61k15Hd86rL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

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

**Q: Is the remote water waterproof???**
A: 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.

**Q: Will this keep the dogs away when I go fir a walk???**
A: 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.

**Q: could it be used to prevent catalytic converter thefts?**
A: 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ SOLID BIT OF KIT
*by S***H on 30 September 2025*

Very sturdy and super loud! Just what you need. Had a similar model before but nowhere near as loud. Easy to install pull tab out and it’s ready to put wherever you want it. No idea how long battery life is, solidly made quite heavy for size.

### ⭐⭐⭐⭐⭐ Great piece of kit
*by M***L on 5 August 2025*

For a cheap little alarm this is great tells me when the local cats are on my scooter which is one of the reasons I bought it to stop the little blighters from getting under the cover and scratching my seat and also it’s a bit of a deterrent from light fingered people has different sounds and gets louder to her your attention well worth buying .

### ⭐⭐⭐⭐ Good value for money
*by J***Y on 4 June 2025*

Good alarm for motorbikes 🏍 . Install under saddle for concealment . Can be set to a loud alarm .

## Frequently Bought Together

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-02*