Power supply/amplifier shall be designed to mount directly into the 'TT' or 'TTM' series lobby entry panel stations. Power supply/amplifier shall contain the system amplifier, power supply, speaker and microphone, all in one 'snap-in' assembly. Unit shall snap onto the panel front speaker/microphone grille.
Power supply/amplifier shall provide the intercom amplification and signalling power for the proper system operation. Power supply/amplifier shall be installed a safe distance from any source of electrical interference.
Contractor shall observe all local and national electrical and building codes.
The Alpha Communications® / S.T.R.™ NH209TT-3 series amplifier/power supplies are used with the HT3009 and/or HT2009 series handset stations to provide intercom amplification and power to operate the associated intercom system, and certain optional components and/or accessories, such as electric door opener(s) etc.
The NH209TT-3 powers from a 12VAC (40VA) low-voltage Class II transformer.
The PC boards are treated with a special chemical finish, to minimize the affects of weather and moisture on the electronic components.
3.375"W (86mm) x 5.625"H (143mm) x 1.25"D (32mm).
|Volume:||Built-In Adjustable Volume Control (potentiometer).
Positive Screw Terminal Connectors.