[nickbw898]

My unit started playing up false alarming so I removed it the very same day knowing the root cause is Bosh design puts a NiMh battery above the PCB and when it starts leaking it kills it. So I opened up the siren and removed the offending battery. Unfortunately when I came to sourcing a replacement battery all suppliers were out of stock, so I ended up buying a new item from Ruff at Swansea. I still have the old unit and believe it is good. It was very carefully taken apart so, with the new battery installed it can easilly be super glued together. If you would like I also have a brand new fixing kit which I did not use. Message me if you are interested.