eMjollRay 110dB Loud Waterproof Wireless Bike Alarm
Temu.com 
Walmart.com 
Shein.com 
Eibabo.com 
Globalindustrial.com 
$29.99
eMjollRay 110dB Loud Waterproof Wireless Bike Alarm Price comparison
- All prices mentioned above are in United States dollar.
- This product is available at Temu, Walmart.com, SHEIN.
- At temu.com you can purchase TEMU Bike Alarm Usb Rechargeable With Mount, Bike Alarm With Remote, Bicycle Alarm System Anti Theft Wireless Bicycle Vibration Motion Sensor 110db for only $12.99 , which is 85% less than the cost in Walmart.com ($89.46).
- The lowest price of GREENCYCLE USB Charging 110dB Bike Alarm Wireless Vibration Motion Sensor, Bike Tail Light with Alarm,Bike Tail Light Alarm Rechargeable, IP65Waterproof, Suitable for Bicycles, Mountain Bikes,4PK was obtained on July 2, 2026 18:40.
eMjollRay 110dB Loud Waterproof Wireless Bike Alarm Price History
eMjollRay 110dB Loud Waterproof Wireless Bike Alarm Description
eMjollRay 110dB Loud Waterproof Wireless Bike Alarm
Protect your precious bike with the eMjollRay 110dB Loud Waterproof Wireless Bike Alarm. This high-quality alarm system not only offers robust security features but also ensures convenience and ease of use. With the threat of bike theft on the rise, investing in an effective alarm system is essential. Discover how the eMjollRay can safeguard your bicycle while you ride or park it. Explore our price comparisons and reviews to make an informed decision before purchasing!
Main Features of the eMjollRay 110dB Alarm
- High Decibel Alarm: With an alarm sound that reaches 110dB, this bike alarm is designed to deter thieves instantly. Its loud output ensures that nearby individuals are alerted, reducing the risk of theft.
- Waterproof Design: No need to worry about rain or splashes. The eMjollRay is completely waterproof, making it a reliable companion during all weather conditions.
- Wireless Remote Control: The alarm comes with a user-friendly wireless remote. Activate or deactivate the alarm with ease from a distance, providing convenience and peace of mind.
- Lightweight and Compact: Weighing only 6.6 ounces and measuring 2.76 x 1.97 x 2.36 inches, the eMjollRay is portable and won’t add significant weight to your bike.
- Easy Installation: Setup is simple and quick. The alarm can be installed without any special tools, allowing you to get back on the road swiftly.
- Battery Included: This bike alarm operates on 1 A battery, which is included with your purchase, ensuring immediate usability right out of the box.
Price Comparison Across Suppliers
The eMjollRay 110dB Loud Waterproof Wireless Bike Alarm is competitively priced across various platforms. As of now, prices range from $XX.XX to $XX.XX. Check our detailed price comparison tool to see how different suppliers stack up against each other. Our tool provides a comprehensive view, so you can make the best purchase that fits your budget!
Notable Trends from the 6-Month Price History
A quick glance at the 6-month price history chart indicates a stable price trend with occasional fluctuations. The lowest recorded price was $XX.XX, while the average hovered around $XX.XX. This information can help you determine the best time to buy the eMjollRay alarm, especially if you’re considering waiting for sales or promotions.
Customer Reviews Summary
Customer feedback highlights several positive aspects of the eMjollRay bike alarm. Users appreciate its loud alarm, citing it as a strong deterrent for would-be thieves. Many reviews mention the waterproof feature, noting how it performs well in varied weather conditions. Additionally, customers value the ease of installation and wireless remote functionality, which enhances convenience.
However, some users have pointed out minor drawbacks. A few reviews mentioned that the remote could be more responsive from longer distances. A handful of users also noted that the battery life could be improved for prolonged use. Overall, the feedback has been overwhelmingly positive, with many customers recommending the eMjollRay to fellow cyclists.
Unboxing and Review Videos
For a deeper look into the eMjollRay 110dB Loud Waterproof Wireless Bike Alarm, check out the various unboxing and review videos available on platforms like YouTube. These videos showcase the alarm’s features in real-time and offer perspective from cyclists who have used it extensively. Watching these can help you understand its operation and reliability better.
If you are looking to enhance your bike’s security, the eMjollRay 110dB Loud Waterproof Wireless Bike Alarm is a top choice. Its features ensure your bike is well protected whether you’re on a long ride or parked downtown. With both price comparisons and authentic user reviews at your disposal, making an informed decision is easier than ever.
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eMjollRay 110dB Loud Waterproof Wireless Bike Alarm Specification
Specification: eMjollRay 110dB Loud Waterproof Wireless Bike Alarm
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eMjollRay 110dB Loud Waterproof Wireless Bike Alarm Reviews (13)
13 reviews for eMjollRay 110dB Loud Waterproof Wireless Bike Alarm
Only logged in customers who have purchased this product may leave a review.
Ammoreena and Nicholas Huddleston –
I ordered this for my son’s ebike since he parks it outside at work. It was very easy to install and stayed in place well. The battery lasts a long time and it is very loud. I like that ot comes with the key fob to set the alarm. It is a great quality product and a great value for the price.
Am really sorry that after waiting the product it arrived to me opened and looks like it was in the storage for such long time –
Diese Alarmanlage überzeugt in ihrer Funktionalität. Ich habe sie am e Bike montiert, ist klein und fällt dadurch wenig auf, reagiert sensibel auf die kleinste Bewegung.
Schnelle Lieferung und fairer Preis.
Diese Alarmanlage ist kann ich nur empfehlen.
Amazon Kunde –
Ich liebe sie. Richtig super laut. So hat man keine Angst mehr das einem das Fahrrad geklaut wird.
K –
I love ALMOST everything about this bike alarm. First off, it’s really loud, which is great (and it’s adjustable). The included remote makes it very easy to arm and disarm the system. It’s also really easy to mount. The battery life is decent, and the thing will just beep at you to let you know when the battery is running low. Most of this product is perfect. The only thing it’s missing is a vibration feature in the remote, as you might not be able to hear the thing screaming if you’re indoors (but you would definitely feel a vibrating key ring). Still, very happy with it overall.
GoGoGadget –
I like the mounting for this, whereas my old one was just zip-tied on. The standby battery life like also easily a month or more which is great as I already have enough devices to charge… thankfully both remote and device are USB C.
Volume is great, but honestly anything above 2 will probably give you hearing damage is you’re standing next to it.
I like the little chirp option on the remote, not that I hope to need it but I sometimes will see people creeping around bike racks and it maybe I’d give it a chirp then.
MannyB –
La première que j’avais reçu avait un problème de batterie mais ils l’ont changer très vite. L’alarme marche bien et tiens longtemps. Le seul petit défaut et que le bruit quand on l’active ou la désactive, c’est assez dérangeant d’autant attirer l’attention.
MannyB –
Wow this is a great little alarm, it’s extremely LOUD, so LOUD that it will wake the dead who will be very angry that you disturbed their RIP, that’s how LOUD it is. I installed it on my eBike, in the front handlebar area, see photos.
When you press the LOCK activate button on the remote you hear a brief 1 sec melody sound that it’s activated and ready. If it’s bumped or otherwise senses motion two loud beeps sound as a warning, and if it’s bumped or moved again within 12 seconds then the alarm wails extremely LOUD with alternating sounds for about 30 seconds, then stops. Or if it continues to sense motion then the loud alarm sound wails continuously until it senses no motion at which time it stops. And when you press the UNLOCK button you hear a brief 1 sec melody sound that it’s deactivated.
No anti-theft alarm is perfect, but this little guy will definitely be a big and immediate surprise to any would-be thief, who no doubt will reconsider what they’re doing, while also being concerned about people in the vicinity who no doubt have turned to look towards the very LOUD alarm noise.
It has 5 alarm volume levels and the default from the factory is set for the loudest level. But I will always leave it on the highest level, what reason would I ever have to turn it down? None! For any would-be thief who isn’t expecting an alarm sound, it will definitely scare their pants off, and they’ll be running away naked!
It also has a button for locating your eBike in a large crowded parking area within 50-150 feet distance, press it and the alarm makes one loud beep sound. I don’t think I’ll ever have a need for this button but I guess it’s good to have, you never know. Plus it has a little mini-light button, but the light is so tiny it doesn’t provide much light at all, but I guess if it was really dark, it may be of some help.
The product listing claims it’s waterproof, but according to the IP65 rating it has some level of water ‘resistance’, but if you dropped it in a bucket of water it’s not protected (that requires an IP67 rating). But water resistance is still good to have if it ever rains while riding my eBike, then I can search for cover, but not continually ride in the rain.
Both the alarm and remote have rechargeable internal lithium batteries of different sizes. The manual states the alarm has a 600mAh battery capacity that takes 2.5 hrs to charge and will last 1-2 months under normal usage, and the remote has a 200mAh battery capacity that takes 1 hr to charge and will last 6-8 months. And when either device battery becomes low there is a sound and light for the alarm and just a light for the remote. Also both alarm and remote have a USB-C port for charging and the alarm lights up with red lights as it’s charging (see photo).
One good thing about the rechargeable batteries is that you don’t have to open up the devices to change batteries, instead you just plug it into a USB power source and recharge it, plus you can do this with the alarm itself still fastened to the eBike, it doesn’t have to be removed to get recharged.
Yeah I really like this Super Duper Ear-Splitting LOUD Alarm!
UPDATE 10-5-24
When I installed this alarm the internal rechargeable battery was fully charged, yet 2 months later (today), there was a beeping sound indicating low battery charge, yet this alarm has been installed on my e-Bike unused for the past 2 months. So this means the battery charge lasts barely 2 months on a full charge, it’s not a ‘long-life’ battery as advertised.
Of course I can charge it back up, but I would think when unused for 2 months the battery would last way more than 2 months. In the product listing the battery is described as “long battery life”, but the instruction manual states the battery is rated for 600 mAh and should last 45 days in standby mode. In my case the alarm was completely off, not in standby mode.
My other brand e-Bike alarm uses 3 AAA batteries and lasts over a year on a full charge (and each AAA battery is about 1000 mAh and there’s 3 of them, so 3,000 mAh total, 5 times more battery charge than this product’s 600 mAh internal rechargeable battery).
UPDATE 11-18-24
Battery went dead again barely a month after I charged it, and it’s been off since that time. This unit beeps when the battery is low, that’s how I knew it was dead or very low. That’s just really bad, I’m definitely not going to use it anymore, gonna throw it in the trash. Do not buy.
redon –
The media could not be loaded.
After charging it doesn’t work unfortunately also when in charge it seems like it works but light never work then after finish charging nothing work at all
Am sorry for that I had to return it back
Amazon Kunde –
The media could not be loaded.
Yo soy usuario de bicicleta y de patinete y, como a muchos, me preocupa dejar mi vehículo en la calle, aunque sea con candado, porque nunca se sabe y no me quedo tranquilo del todo.
Con esta alarma ya tengo la confianza que necesitaba. Me ha sorprendido muchísimo la potencia que tiene un aparato tan pequeño; de verdad que suena fortísimo, y resulta muy molesto si estás cerca. Desde luego, el ladrón no va a pasar desapercibido 📢.
🔋 Me encanta que tanto el mando como la propia alarma se carguen con USB-C. Hace años tuve una con pilas y era un rollo porque se gastaban en nada.
La alarma tiene forma de luz trasera, pero no es ninguna luz. De hecho, me parece genial que sea así porque se camufla perfectamente y no gasta la batería iluminando, ya que su función es para emergencias.
El mando a distancia es muy pequeño y es fácil llevarlo en el llavero con un cordel, ya que no pesa nada.
Tiene 5 botones:
– Luz de comprobación para saber si tiene batería.
– Configuración de volumen con 5 niveles.
– Tono corto para comprobar que la alarma tiene batería y a qué intensidad está configurada.
– Bloqueo.
– Desbloqueo.
Tanto para 🔐 bloquear como para desbloquear 🔓, la alarma emite un tono corto de comprobación y un parpadeo de las luces.
Otra cosa que me ha encantado de esta alarma es la versatilidad que ofrece. Como es tan pequeña, la puedes poner en cualquier parte, como por ejemplo, ahora en verano, en la bolsa de la playa si te vas al agua; también la puedes pegar con cinta de doble cara a una puerta que no quieres que se abra, o pegarla detrás de algún objeto que no quieras que se desplace.
Por la calidad y funciones que ofrece, por unos 30€, lo considero un buen precio. Si la encuentras en oferta, ni te lo pienses.
Espero que mi opinión te resulte útil. ❤️
Elise –
doesn’t stay charged as long as it said it would and is a pain to get off to charge but other than that it’s ok
GR –
Esta alarma se escucha bastante fuerte así que hace el trabajo.
Me gusta que tanto la alarma como el control se puedan recargar por USB-C.
La alarma tiene un botón que no hace absolutamente nada así que no sé que compone o si solo es para engañar o distraer.
El control cuenta con 5 botones;
1. candado cerrado – activar alarma
2. candado abierto – desactivar alarma
3. campana – simplemente emite un sonido
4. bocina – sirve para ajustar el volumen de la alarma
5. foco – simplemente enciende una pequeña luz que tiene el control, pero que es casi inútil porque no alumbra casi nada.
Obviamente esta alarma no impedirá que te roben la bici o el scooter, pero lo menos que quiere un ladrón es llamar la atención, así que me parece muy buena para mantener a raya a esos amigos de lo ajeno.
Iva Oxa –
This bike alarm fits securely on the bike frame, but I had some difficulty pushing the bolts through the mount. After a few attempts, I managed to get the mount screwed on, though the bolts ended up sticking out, which detracts slightly from the appearance. Attaching the alarm with adhesive tape is probably not the best idea for bike use, as a thief could easily remove or destroy it. The adhesive seems better suited for other scenarios, like a hotel door.
During testing, the alarm performed well, with sufficient sensitivity to detect movement. It’s quite loud, so it would be noticeable to people nearby, although in a noisy environment or with closed windows, it might be hard to hear from a distance. The alarm stops briefly after the shaking stops, then resumes if the shaking continues. I like that it doesn’t flash while sounding, so it’s not immediately obvious what’s causing the alarm, making it less likely to be tampered with.
Additionally, I appreciate that both the alarm and remote control are rechargeable, which is more eco-friendly than using disposable batteries. I’ll update my review after further testing on city streets.
Shannon R –
This is a great gadget for preventing your bike, motorcycle, etc. from theft or vandalism. It can be securely attached to a post or stanchion with the bracket provided. The remote with vehicle search and volume adjustment makes it very easy for you to monitor the parking area you use. The rechargeable battery life is fairly long which is also convenient. The chirp feature on the remote is an extra bonus.