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The reason I mention avionics is that condensation in avionic boxes is one of the main causes of failures in aircraft systems, to the extent that the Swedish air force reduced unserviceability massively by plugging a commercial dehum into their aircraft avionic bays during overnight parking. So...

Thanks, I'm in the driest part of the Canary Islnds ,where it is 29C outside as I type, with low humidity. We have had about 1/4 inch of rain in the last 18 months. Believe, me, condensation is not a problem! Added to which, I used to be an avionics engineer, so I understand the effects of...

It's 3 years old, and is in a very dry environment ( not Uk ). Yale have now confirmed the actual siren is defective and are replacing it.

No on the 6200 thecontrol panel is a wireless hand held device that fits in a holster, and makes no noise. Both the ulock/lock peep and the loud alarm come from the wall mounted round wirelss alrm box.

Hi, no, I'm quite familiar with the tamper switch, this is the unit which is about 6 cm (from memory) in diameter, and vents through holes in the back plate. It is both the lock/unlock bleep, and the full bodied alarm noise that have gone quiet.

mdf , yes, but the part I'm talking about is a couple of cm deep, and is fastened into the tube by 4 screws. Alarm man, it's more a cadmium plated colour, but I think you are right. The question is, should it be glued round the circumference to sound loudly. chaindaisy, probably over a...

I've noticed that both the siren and beep on my Yale wireless 6200 have gone very quiet, I've fitted new Duracell batteries to no avail. It seeems the noise is made by a circular plastic pot screwed into a vented tube. The open end of the pot is closed by a metal plate which appears to be...