The master station(s) shall be Alpha Communications® / Ring model AA903 or approved equivalent. Master(s) shall have clear two-way communications. Master(s) shall feature a 12-button keypad, and shall require simple home-run wiring. Master(s) shall be flush or surface wall mounted using the appropriate backbox/housing. Master(s) shall be used with the BBF903 (flush backbox) or BBS903 (surface metal back box) or BF936 (surface plastic backbox). Unit shall be finished in a brushed aluminum finish.
Contractor shall observe all local and national electrical and building codes.
The unit features a brushed aluminum front plate with speaker and microphone for normal hands free speech with a range of approximately 3-5 meters or 10-15 feet. Its keyboard section contains a warning lamp and 12 buttons plus a privacy switch, which also functions as a microphone cut-out switch when pressed during a conversation.
On the touch-dial keyboard, the left-hand T-button is provided for manual control of a conversation when desired. The X-button is used to cancel a call. An optional model no. GD591 add-on handset is also available.
The station permits the connection of a parallel speaker where additional output is required (loudspeaker impedance 50 ohms recommended). The station is designed to work with the RM5000EX and/or CB901EX series microprocessor intercom systems.
|Color:||Brush Aluminum Faceplate
|Dimensions:||3.9" (115mm) W x 10.6" (270mm) H|
||24V DC+/- 20%|
||300 - 5000 Hz|
||0 dB (1 mW/600 ohm)|
||normal -12 dBm, max + 4dBm|
||according to CCITT norms|
|Mounting:|| Flush Backbox: BBF903
Surface Backboxes: BBS903 (Metal) / BF936 (Plastic)