This is a Trovan 300 AEG. I have found it on a window ledge in my house. When I googled it was identified as a transponder. It is a device used by thieves to identify addresses. In particular bike thieves.
Its been reported to police, but given it Derbyshire Constabulary chances are they will not prioritise. They have offered to make contact with me in a ‘few days’ (feel safer already).

I give notice now to any prospective thief, if you enter my home or try to take my bike you will not walk away. Folks check your homes and bikes for these. On bikes often slipped into fuel tanks or wedged under seats. Smaller than 5p in diameter but thicker than a pound coin. Look like a magnet or small draughts piece.
Right off to buy a Lucille (just in case).
Tagged a few of you but won’t let me tag everyone.
Please share. Think gonna fit this to a tain lol. Follow that thieving scum.
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Jonesy, just a human.
It's 8yrs since I started this blog. now in 2026 I am 59, and already medically retired due to chronic ill health. This site sets out my frustrations of how I see our country and world, and how I truly believe it needs to change.
I now absolutely believe democracy is either broken or a cruel hoax that was designed to keep society in its place, undrt the rule of what now we call The Establishment.
Iam still at time of writing this a SWE Registered Social Worker. I am unable to work but use my experience to aid and assist others pro bono.
In Lockdown I set up Vunteer Riders UK, we sourced, manufactured, delivered PPE throughout the pandemic, in excess of WHO standards, we got over 10,000,000 (10 million) pieces and sets out completely free of charge. Not a single penny changed hands. So when I see the corruption in The House of Commons and The House of Lords in regard to the Pandemic, I feel infuriated.
View all posts by Jonesy, just a human.