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Old 6th Dec 2017, 8:12 pm   #4
Join Date: Oct 2006
Location: Leeds, West Yorkshire, UK.
Posts: 109
Default Re: Sterdy door phone handset/cradle

I guess it's just a question of applying a voltage of sorts across the terminals to see if the buzzer works. What would be a suitable value ? I don't want to overdo it and risk damaging the unit. Ta.
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