Vibration Activated 120dB Anti-Theft Security Alarm with Remote Control Keychain

Pros: I have a ebike and it will fit quite easily in the glove compartment. Takes up very little space! I'm sure it will also fit under the seat, or if you have a helmet carrier like I do.

Cons: You really have to fidget to get the battery in the back. You wiggle and wiggle to get it in, but once it's in, it will be fine. I don't know about the battery life. Go buy a duracell just to be on the safe side.

Other: Great for motorcycles or things you can install the small noisy module, and it's keyless too! It's amazing!

Pros: - Small
- DAMN LOUD
- Sensitivity is adequate
- Easy to use
- Remote control
- Comes with a battery

Cons: - When it goes off, it only stops by using the remote. It should have an "auto-stop" feature that would stop the siren after one minute and only "fire it up" again if messed around. Because of that, on the fourth day somebody stumbled my motorcycle and it kept ringing the entire afternoon, draining the alarm's battery.

Other: Cheap and useful. Buy this if you keep your two wheeled vehicle in a hearing distance, so you can turn the alarm off when it fires.

Pros: I use it for my mountain bike. It makes you sleep sweet and calm on camping, like a child :D
You sleep in the tent, and keep your bike outside, and know, that your bike is in safety and if anybody touches it, you will get to know this in a moment, and you will be woken up!!!!!
Take it if you want to sleep well :D
Works very good, not too much sensitive, it works only if something really happens to it.

Cons: none

Other: buy it :D

Pros: I installed this product in my motorcycle and it works perfectly.
It uses a remote control like a conventional automotive alarm.
It is very cheap.
It is very sensible.
It buzzer is so loud even if you put this in a hidden place.
It has a imam to fix in mettalic places like bicycle or motorcycles.

Cons: Battery was go down so fast! I solve this problem making a circuit to turn this product in the motorcycle battery and now it is ok.

Other: It is a very useful product with a very good price. If you want to put in your bicycle or motorcycle it is a very good product.

Pros: It's a very sensitive alarm. It's loud and easy to operate. Batteries seem to last pretty long. It's reliable. It runs a normal 9 volt battery I already bought another 2 for friends

Cons: Range of remote is only a few meters. The on/off switch rattles. But it's so sensitive that it sometimes reacts on loud noise, witch also is a vibration.

Other: Good buy, does the job.

Pros: - This alarm is extremely noisy, I would not have thought that it would be so loud - ItComes with a remote control, so you can leave your home and turn it on - It is also very sensitive. If you put it on a door, a shock on the door will always make some noise!

Cons: - If your thief looks at the alarm, he could easily turn it off with the switch - Perhaps a little bit too sensitive. It never made noise for nothing, but I'm always a little worried to wake up my neighbours during the night if somebody in the building smashes a door...

Other: Overall a good unexpensive way to frighten unexeperienced thieves. Probably useless against experienced ones, but for the price it is perfect.

Pros: -- Well built. Good components, made by Honestdz (honestdz.com). It generates 40Vac from the 9Vcc battery and that's why the sound is so loud (110db near piezoelectric speeker).
-- Supports 2^12 combination codes, so you can buy a lot of them and use it together without problem. You can easily change the codes, just soldering some pins on the circuit board.
-- It is sold with batteries (2) - remember it costs less than $10.
-- Its very noisy.
-- Cheap, ready to use.

Cons: --The remote range is not very good - about 10 meters-, although you can put an antenna in the receiver (open it and look for "antenna" on the receiver board).
--The alarm works for only 30 seconds. After that it stops.

Other: Buy it. Its worth. If you like using microcontrollers, like me, you can do a lot of projects with it, improving many features and using the hardware, like the remote control.

Pros: Very loud. Works great with the remote - One beep to arm, two beeps on disarm.

Cons: Maybe slightly too sensitive.

Other: A great unit - does exactly as it says it will do. We took it around Europe and used it on our bags, or put it near our dorm door at night for intrusion protection also. The only draw back is it might be slightly too sensitive, and once set off it rings for a long time, making us reluctant to leave it on sometimes.

Pros: This alarm is very loud. It pauses after some time which prevents the battery from running down if you are not around to deactivate it. Sensitivity is adequate - have not tried it in the rain but for now it does not seem overly sensitive, which is a good thing. Batteries included.

Cons: Using the standard batteries that came in the package, the range is about 5 metres. Should be better when I replace new batteries. Build quality of the remote is acceptable, but build quality of the alarm is not. on/off switch was stuck. I opened it up to fix it by shaving off some excess plastic moulding. Works fine now.

Other: Good value, buy!

Pros: Very good value. Accurate sensitivity, good range of remote control and included batteries. Really loud sound! Remote control works fine through one concrete wall ,o)

Cons: The construction of alarm could be little bit more precise.

Other: Worth to buy it! I have bought about 5 pieces and all were quite good quality. May be the package should be more resistant - the journey via post is really long and difficult.