








🚨 Protect your ride with the loudest, smartest, and sleekest alarm on the block!
The Upgraded Bike Alarm is a compact, wireless anti-theft device featuring a powerful 113dB vibration-triggered siren, adjustable 7-level sensitivity, and an IP55 waterproof rating. Controlled via a remote with SOS and vehicle finder functions, it installs easily without wiring, making it ideal for bikes, scooters, and electric vehicles seeking reliable, customizable security.









| ASIN | B07KPKLBCR |
| Batteries | 3 AAA batteries required. |
| Best Sellers Rank | #134,609 in Automotive ( See Top 100 in Automotive ) #45 in Antitheft Alarm Systems |
| Control Method | Remote |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,842) |
| Date First Available | November 19, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4.5 ounces |
| Item model number | KS-SF22R |
| Manufacturer | Changzhou Hengdun Electronic Technology Co Ltd |
| Maximum Range | 10 Meters, 20 Meters |
| Mounting Type | Surface |
| Noise Level | 113 Decibels |
| Product Dimensions | 3.7 x 1.8 x 0.6 inches |
| Sensor Technology | Vibration Sensor |
| Size | vibration alarm |
| UPC | 664248633569 |
| Voltage | 12 Volts (DC) |
| Wireless Remote | Yes |
J**S
Surprisingly effective!
This little alarm is great. I purchased it for my golf cart. The sensitivity is perfect for our use. The first few days we had it I kept triggering the warning chirps because I was forgetting it was connected to the cart and not disarming it before getting onto the cart. Just enough sensitivity to go off without being over active. It has nice modern arm and disarm sounds and also has an option to change the sound that you use if you press one of the buttons on the fob as a "car finder" type sound. I like to trigger this sound when we drive or cart to a local store so people know it has an alarm system. The main alarm sound, after being set off by vibration, is the typical siren alarm sound you hear on most vehicle alarm systems. All of the sounds ate very loud. I Love that it's totally wireless and affordable, yet very effective. Its been about 1.5 week's since install (took 3 minutes) and I would definitely purchase it again.
M**M
Sound the alarm!
First off, I am a real unpaid Amazon customer. This alarm is amazing. Just loud enough the scare off the bravest of Thieves. The motion sensor is sensitive butt it gives a warning before the full alarm goes off. So if it's windy, the pre alarm might sound and if it keeps getting jostled around the full alarm will come on. Otherwise, just the warning will sound if no more motion is detected. The key fob is simple and does exactly what it should do. Actually doesn't feel cheaply made nor is it the best I've ever used. Time will tell. For now I'll say that this is a very functional and easy to operate alarm and well well worth the money.
C**Y
Works as it described
Works as it should. No complaints. I use it for my golf cart.
T**H
Small and packs a punch!
This product is pretty small and convenient to use with the remote. We are using it as a catalytic converter theft deterrent. The provided alarm with the car is not sensitive enough to go off if something is cut out from the bottom of the vehicle (ask me how we know). So we attached this to the back of the frame and the muffler/exhaust system on our vehicle. Due to the proximity to the very hot exhaust system, we swapped out the provided plastic zip ties for 16 gauge galvanized steel wire and covered the back and sides with pipe insulation foam and a couple of layers of thick tin foil. (Foam, high temp glue, and wire from the local big-box store). It hangs from the bottom so that it moves freely and it doesn't look the prettiest, but you can't see it unless you crawl all the way under the car. The speaker is aimed at the ground for maximum sound reflection. Sensitivity The highest sensitivity setting works great. If you so much as tap/touch the exhaust system it sets the whole thing off. (the exhaust system is connected to the frame with its own suspension system so touching it anywhere shakes the whole thing). There is first a loud warning chirp and if you touch it again within a short amount of time it will go off for roughly 30 seconds. (if you continue to cause it to move, it will continue to go off). So if it is accidentally set off it will stop on its own without you using the remote to turn it off, which was a huge plus for me. For being so small it's quite loud. From reading the other reviews we did decide to swap the provided batteries out with higher quality ones. We will not be using the provided SOS signal because it is not used on a back, but we didn't have to worry because it comes programmed without that being turned on.
A**A
Good only if you use it together with disc lock
Good only if you use it together with disc lock. The alarm sound is very strong.
W**L
Not very loud and it died quickly
For 110 decibels, it sounds more like 80 decibels, even with it out in the open. Maybe if it was in a parking structure it would be louder. Battery doesn't last long, and it took some significant force to activate the sensor.
B**R
Great little deterrent and loud as can be!
Fantastic addition to my E-bike. It definitely helps me keep piece of mind when chaining it up somewhere or even while it’s stored in my screened in porch. It is super sensitive. Just a couple of times I’ve tried opening my pannier bags without turning it off and it went off! It’s small enough to not be noticeable and is a great investment to give me extra security to protect my bike.
K**A
Good features, perfect performance. Dig deeper for programming options
Works great. Don't forget to fully explore the finer programming like type of alarm, loudness, and shake sensitivity. This has done everything we needed. Use it on a mobility scooter that we have to sometimes leave out of sight.
T**D
After reading about the remote control in other reviews I was a little hesitant about buying one, then I saw this "upgraded" version. When it arrived I was pleasantly surprised. The alarm unit is fairly robust, easy to fit and set-up. It is smaller than I imagined which is a positive. The remote is very solid, the buttons have a quality feel and the blue led ring around the "arming" button along with the chrome bits just set it off. Detection is impressive and wow is that sounder loud! Peace of mind at a great price.
R**O
Es pequeño y puedes instalar donde sea
T**E
Sehr guter Schutz für meinen escooter, ist leicht zu installieren und bei Bewegung geht ein lauter Arlam los, die jeden Dieb in die Flucht schlägt, der kauf lohnt sich auf jeden Fall.
I**N
Vraiment facile a placer perso sur ma trottinette en plus du cadenas évidemment
Z**K
Gemakkelijk en vrijwel onzichtbaar te bevestigen aan de fiets. De gevoelige sensor is een pluspunt. En het alarm gaat heel hard
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