GREENCYCLE 1 Pack Bike Alarm with Remote, Anti-Theft Vibration Security Motion Sensor Alarm for Vehicle Bicycle Electric Tricycle, 113dB Volume and Sensitivity Adjustable,IP65 Waterproof,SOS Function

Alarm bracket clamps onto the frame and you can place it where you like it. Hide it to surprise a would-be thief or put it in plain sight as a warning. Alarm unit detaches easily for recharging which also means a their can easily remove it. The sound is a piercing high pitch which is easily heard. An excellent value if you are looking for an alarm that does not break your bank.

Receive this today mounted it on my bicycle kind of tucked away where you can't hardly see it armed it and then proceed to test it, Oh my Lord this thing is freaking loud !! This is an outstanding portable alarm that you can use many different ways. I see a lot of other reviews that people are having problems figured out how to operate this little mini alarm. just go on YouTube and type in bicycle alarm and you will see this model and you can watch video and they will show you how the change and operate it and all these other things you need to know about it easy. But when you receive it it's already set on the most sensitivity and aloud as it can be ,( Boy is it loud ! ), so I don't understand why anybody needs to adjust it but some people do. I highly recommend this for your bicycle or e-bike or just to use on your house or whatever you want to use it for, if this doesn't get somebody's attention they are just flat out or deaf.

nice little alarm. hides great on my bike. loud enough to draw attention. great value

easy simple perfect size to miss overlook

all right I got off you always great

I purchased this item based on its positive reviews, and the fact that it had an "SOS" button feature. Just push a button on the remote, have the alarm sound, push a button again, and have the alarm turn off. I wanted something I could use to spook the cats off of the window sills, and this sounded like a great inexpensive solution. I checked repeatedly with Walmart's "AI chat" feature that this Greencycle alarm would work in that fashion before putting it in my cart- not that doing that is a guarantee everything will turn out ok. I am disabled, and can't drive to the stores or a post office to make returns, so I make sure to be as careful as I can be any purchase I am making will work out. Shipping was fast. The item appeared to be quite sturdily constructed. The unit is made out of solid plastic. You pull out a clear plastic tab to activate an interior battery (I assume.) It comes with a fairly well-made little remote. And- that it where my comprehension of this device stops. As other purchasers have stated, the instructions were evidently written by inferior, or outdated, translation software. They are totally incomprehensible. I read through them a few times, and thought, ok- well- I can figure this out. No big deal. The unit comes with installed batteries, which implies the alarm is ready to use. How complicated can this thing be? But after about a half hour of reading, re-reading, and poking buttons, things started to get very tiresome. In frustration to get the SOS feature to work, I went back to the "instructions," which mention baffling things like "learning codes." Except- no list of learning codes. "Be cautious of the host can caters up to 8 remote controls coding only, the first registered remote control coding will be removed if exceeds 8 remote controls registration." Fun, huh? I received this item on a Saturday. I found, at least, some contact information for GREENCYCLE. I'll have to wait until Monday to speak (hopefully) to someone there to try to figure out how to be able to press a button, get the alarm to sound, press a button again, and have the alarm stop. That's all I want it to do; that's what I was promised it would do, and many reviewers have used this thing that way. Fingers crossed. I'll be happy to add an updated review if the company helps me figure out this very simple function for their device that Walmart assured me this alarm was capable of. If you plan to buy this device, all I can say is- good luck to you.

This thing works great. It's quite sensitive and be sure to read the instructions so you set it up correctly. It hides nicely under my seat, and if the alarm goes off it vibrates the remote. Great bike alarm for the price.

For the money, its awesome. super loud! sensitivity adjustment would be nice but, it's factory sensitivity is pretty good. These would be good for other things besides bicycles.

I've installed this alarm in two scooters/mopeds and it gives me huge piece of mind. It's both sensitive to movement, and very loud. The batteries last a couple months, and need to get swapped out from time to time otherwise it gets quiet, but it's also a good chance to make sure it's functioning when you switch out the batteries. There's a function that helps you find your vehicle, so that for me was an unexpected quality of life improvement I didn't intend when buying this. I think it's deterred one theft so far, since the scooter was tampered with, but still exactly where I left it.

The product works great. (Even when I forget it's on there.) Three-way accelerometer is perfect. Turn it on, and in 2 seconds the position is set. One bump and it gives a warning beep. Touch it again in next 12 seconds and alarm will sound. Great price for security.