ONVIAN Rechargeable Bike Bell Bike Alarm with Wireless Remote, Motion Sensor Alarm Bike Horn for E-Bike Motorcycle Bicycle Scooter Car, Volume Adjustable Bicycle Bell Motorcycle Alarm

this alarm/taillight is a great innovation. With 2 mounting options - 1 is a mount attaching it to underside of the seat the 2nd is to mount it to the seat post. I would suggest they create a 3rd option to mount this to the back side of a rack. I was able to make this work by modifying the one mount, and it does work but it would be better if there was a solid mount for the back of the rack.

I purchased this for my husband who has a very expensive e assist mountain bike. It’s basically a car. He rides it to work everyday and has always been weary about leaving it locked up because it might get stolen. When it first arrived he was so skeptical. UNTIL he tested it (in our room) and OMG this thing is loud! He immediately installed it on his bike and it will definitely work at deterring a thief. It also has a smart detection where it knows when you’re riding it will blink and when you’re slowing down the blinking will slow down and eventually just be red indicating your stop. Super useful!

The alarm is very loud, and the tail light is plenty bright. The remote works from a pretty good distance however there are a couple things that could use Improvement.The tail light does have a timeout, which is kind of a bummer because it will turn off after a long time of riding and I can't see that it has turned off because it's behind me. Something I would really like is if the fob also had a beeper in it to alert me if the alarm is going off and I can't hear it. Overall, it is a fantastic product and I feel a lot safer leaving my bike locked up out of sight with it

This light has several nice features that most other bike taillights don't have. It's rechargeable, but the fact that it turns itself off is nice. The fact that it incorporates a built in motion alarm is excellent.The USB charging port is recessed with a rubber cover, but the recessed space is almost to small for even the supplied USB cable and _none_ of my many other USB micro cables could be used until I carved the micro connector insulating plastic down to fit the recess.The supplied charging cable is so short, the light needs to be removed from the bike to recharge it, and that's why I wanted to use a longer USB cable.And, that leads to the only two mounting options. The one I needed to use was the seat post mount and it assumes a seat post diameter that is far smaller than the post on my bike.In addition, the seat post mount requires an (easy to loose) metric thumb screw to prevent accidental loss, and making it a pain to remove and mount the light ...offering better seat post options would be nice.But, that said, I ended up trying 5 different taillights, and this was the winner.The "Pairing" instructions in the included manual are easy to misunderstand so restating the instructions might help. To pair up to three additional remotes;Make sure the Alarm is NOT active<Press/Hold> the "Function" Button on the Light/Alarm unit (not the remote) for 3 secondsThe Light/Alarm should give a single "DI" tonePress Any Key on the RemoteThe Light/Alarm should give a multiple "DI-DI" toneThe Remote is then "Paired"To "UNPAIR" a Remote Press/Hold the "Function" Button on the Light/Alarm unit for 7 secondsThe Light/Alarm should give a Long "DI" tone

I was very impressed with your product. I didn't like how the alarm doesn't go off when it is first touched by a potential theft. I had to add to my previous review. My brake lights want stolen off my bike. The biggest thing I think should be improved is how can it be harder or just be aggregate to a theft to just take it right off much bike. I really loved and depended on that light . I did a lot of night riding.

First impression? This thing is super sweet! I've got a trunk on a rear rack with a taillight mount but the only lights that mount to it are boring, "dumb" lights and rechargeable was rarely to be seen. I decided to take a chance on this light based on the features (🤘🏻🤯) and other reviews and just hope that I could find a decent mounting solution. Well how happy was I to discover that the saddle mount was the EXACT perfect size to fit on the bars of my rack (just before the rear upsweep)! It's currently charging (during which the light is on "dim" mode, turns off when done) and the light is nice n bright, easily visible. I can only imagine how bright it'll be once charged! The remote mounted right next to my right grip, easily accessible with a thumb and doesn't interfere with either shifters. I'm just very impressed with the initial quality and appearance, now hurry up n charge! 😂(Will update after some actual usage and testing of features)

too bulky and not as bright and the sound is annoying . Regretted this purchase

This is a louder alarm than others I have purchased. The remote works well at the distance I need. I have found the battery to last a good long time. My challenge and reason for the low rating is with the design of the mounting system(s). It provides for two mounting options, one under the seat and the other to a bar. The underseat mounting system works but in having to use zip-ties to secure, it cannot be tightened enough to prevent the light from drooping down making the light ineffective as it points downward. The bar mounting option is the options I wanted to use to mount on the rear rack of my eBike however the size of the "ring" mount is twice the diameter of my heavy-duty rack (Lectric XP 3.0) or any other rear rack mount location I have ever seen. It seems to be the size of either a seat post or handlebar. Furthermore, the ring mount only works with the specially keyed slot on the actually light/alarm thereby forcing you to use the provided ring mount which I cannot use. I have had to mount under my seat where it works great as an alarm however is 100% useless as a light given that it droops (points downward) and is hidden by the bike bag on the rear rack. I would recommend as an alarm but not as a light. As soon as I find a better option, this will likely find its way into the trash.

An awesome alarm, brake light, and flashing light with a horn at a reasonable price! All working great!

Bought this to help protect our e-bikes. So far it is working well and the tail light is good as well. I like the idea of the brake light. Not sure yet how useful the brake light will be, but it works fine. The quality looks good. Too soon to tell how long the battery will last. I would like to see a longer charge cable. Once the light is secured on our bikes, made theft proof etc. It will be a pain to have to remove it to charge. The included cable is only about 6 inches long. Also USB cables and chargers are getting fewer, would be nice to see a USBC socket or an adaptor.

This alarm works great and is easy to use with the remote. I have 2 issues with it. The mounting options are for the seat post or the back of the seat itself. This does not work if you have a saddle bag and want to take advantage of it's function as a tail light. I had to improvise by zip tying the post mount to the side of my carrier so the light can be seen. The first picture shows that jury rigged mount. The light slides in and out of the mount so you can charge it. There is no light in the picture because it fell off. I am not mechanically inclined and the instruction booklet is about as clear as mud...badly translated english. A small button screw is provided and needs to be screwed into the light after it has been pushed into the slot mount. This is not made clear in the instructions and you have extra screws and zip ties and various pieces left over, so it is not obvious that you might have missed something. My first rough ride, no more light/alarm ): That being said, I explained my situation to the seller and they are sending me a replacement :0 :) The alarm is nice and loud but not too easily set off and the tail light functions are great. Definitely buy it.....just don't forget or neglect the little screw!

Perfect bike rear light. Alarm is loud and you can change sensitivity which is something that is missing in other bike alarms.

The alarm is loud, sensitive, and easy to switch on and off: I normally use 2 locks in risky areas (one for the motorized rear wheel, one for the frame) but, for short periods in busy areas, I am happy to use this and only one lock, which saves time and weight. If you just bump the bike it gives a short loud warning. If it continues to move for more than a second or so, it is ear-splittingly loud.The automatic brake light works well - it comes on while you brake in the day (assuming the light is switched on), and brightens/stays constant while you brake at night.The horn can be set to a few different annoying sounds, and is loud enough to penetrate car windows so motorists know you are there - not as loud as a car horn, but not far off.It and the remote has survived a lot of rain.The battery life is good - a couple of hours, even when constantly on, and several hours when flashing.Less wonderful:The buttons on the remote are bunched too close - much too easy to press the light switch instead of the horn and vice versa. I want a horn, at least, that I can reach in a hurry without having to think or look.The light is light-sensitive and will not come on until it is quite dark. Not great if you want to use it for visibility on grey days, but saves power, I guess.Construction is cheap. The rubber-covered switch on the light itself barely worked at all after a few weeks, so I have to use the remote instead. The remote holder is a cheap plastic clip, easily broken. The lamp is attached to the saddle with zip ties. It is cheap for the many functions you get, but corners are cut here and there to make it so.Possibly a feature, but annoying - it makes quite a loud noise when being set and unset. Good to know it works, but I'd prefer it to be a quiet 'bip' and/or flash of the lights.