All,

I'm selling the portable (shock activated) bike alarm pictured below. £100.

It has two parts, the self contained rechargeable box that's to be placed with the bike, and the pager that you take with you.

The box has a transmitter (LCA-2000), a shock sensor and batteries. The idea is you switch the transmitter on when you park up, and if someone moves the bike, the pager alerts you (1KM range advertised in open terrain, about 150m in the city). There is no sounder on the transmitter; it's only the pager that sounds.

The transmitter comes with rechargeable batteries (good for 2 days of use), and a charging jack. When the tx runs down, you can charge it via the jack, or open it up and change the batteries.

I built this after the last paging alarm I owned got sold with the bike I had. This is a one off. I had to wire up everything in the box, and build the shock sensor from scratch (using prototyping board).

It's not waterproof, you have to keep it dry (i.e. the seat compartment).

Fully functional and useful if you have more than one bike that you want to protect.

I can re-wire it to run off the 12v system on your bike(s), but you’d need to wire in 12v jacks (from the battery) on each bike so the unit can be plugged in. The internal batteries would then be redundant.

The transmitter unit can now be bought on the open market for 60 + vat (originally cost me 100), but you wouldn't get the shock sensor or batteries and you'd still have to wire it all up. Here's one that's built.

Selling as I don't use it. I can demo operation prior to sale.

Thanks.

Is it possible that you could source a more complicated version please?l

Rob D said:

How much for the watch strap?

The strap is free.

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So long as you buy the alarm.

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Which will prevent you having to rip the paging alarm out of every bike you sell (or total if you're H).