snippet: 2 Wire Wall Handset-Buzzer-White Use with NH209 Series Power Supply/Amplifier or with Sentryvox Switchboard Master. The Alpha Communications® / S.T.R.™ HT3009/2W handset is designed to work as an apartment type handset intercom station or for industrial and commercial building entry applications. This attractive handset easily surface mount right on the wall or over a single gang flush electrical back box (or plaster ring). Handset can be changed to desk mount with the addition of a model TZ1003 desk adapter, or can be flush mounted with the addition of a Model UM3004 flush housing/trim assembly.

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