Have any of you had any experience with the Ducharme Bicycle Alarm..... https://www.ducharmealarmsystems.com/ ........? If so, what do you think of it?

I really think its a waste of cash, as it will encourage people to kick the bike locked up with to have it go off, and if it goes off, not many people will really care, because it will be ignored like all alarms these days, due to all the false auto alarms. You'll likely end up with an broken alarm-lock on the ground and no bike. Plus, a would-be thief that gets the alarm going can always make excuses that he bumped into it... it won't scare people off, but just annoy everyone in the area.

Instead, buy Pitlocks instead, the package that covers both wheels, seat, stem, and V-brake bolts. Even with the alarm, you still need to carry around a sturdy U-lock that is Sold Secure certified.

Lastly, the biggest feature with locks is looks. If a thief sees an alarm lock and doesn't know what it is, it provides zero deterrant, and maybe a target for vandalism if it goes off. A good U lock, plus locking skewers, a thief will realize he doesn't have the time for that, and move onto the Kona locked up with an X-Mart special lock that can be picked open with a paperclip.

I agree with Mlts22. Also, that cheap looking website and the "cheap" scare-mongering talk therein turns me off a bit.

I saw a huge U-lock equipped with an alarm that was very impressive. It was for a motorcycle, but could be used for a bike I think. Sorry, I can't remember where I saw this so Google away.

*** This is an edit ***

I Googled some and found it: it's over at Youtube and I used the search parameters "U-lock alarm". It brings up a 55s demonstration and a link.

I LIKE that ad! It shows most of the things they teach people to NOT do on successful websites! I think the seller is serious, but only about selling those locks. I also liked the link to Bikeforums.net claiming to be a video but only being the home website. VERY BAD FORM! He would get a C, only because he did actually post a couple of web links. At least I didn't spot any obvious typos.

every 15 secodns it wants to arm it's self. well you would have to move all the time every stop light and look like a dork getting your alarm not to arm (G) I could see 5 minutes not 15 seconds.

Instead of yet another source of noise pollution, if there is an electronic device, I'd recommend a GPS transponder that is installed in the frame with some way to work as an antenna... a LoJack-like device pretty much.

The first rule about alarms is that one, someone must hear it, second, someone must care about it to do something other than look in that direction, either because its their own property, or the person is paid to care about it. House/business alarms call central monitoring stations which send out security or the PD. Anti-shoplifting alarms have clerks to monitor and intercept people trying to yank electronics and such off tethers.

This is why vehicle alarms are next to useless these days.

They have a lot of GPS dog locators available online, fairly cheap too. Would probably be adaptable to bikes. https://www.maps-gps-info.com/gp-trkg.html

I hope the battery life mentioned is referring to once you start "calling" for it's location because I could not see worrying about batteries all the time. I have a few problems with protection after the bike's stolen. I'm not really the rambo type myself and good luck getting a cop quickly.