The wireless bell push is never exposed to any extreme weather
conditions that would normally apply in most installations and this
seems to demonstrate the benefit of avoiding such .

The "environmental stresses" may not be weather related. Our wireless
chimes need to be reset every few months after use by someone (usually a
white van delivery driver) of the "harder I push the louder it rings"
persuasion. It was more often until I supported the circuit board with
rubber washers so it bends less easily.
--
Robin
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