TOA Electronics VS-900 - Manual (Page 7)

VS-900 Architects and Engineering Specifications v1.0
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V line with rated primary impedance of 625 ohms. The sub-station shall be weather-resistant for
use in outdoor applications. The sub-station shall mount to a two-gang electrical box with adapter
ring using included #6-32 nickel-plated steel, slotted, oval head mounting screws. The faceplate
dimensions shall be 4.72" x 4.72" (120 mm x 120 mm). The sub-station shall maintain reliable
operation in the ambient temperature range of +14 to +131 degrees F (-10 to +55 degrees C).
The sub-station shall weigh 1.19 lb. (540 g).
Each Sub-station shall connect to a unique Sub-station Line Card port with a single, shielded,
twisted pair cable with maximum service distance as follows: #20 AWG: 4265 ft./0.81 miles (1.3
km); #22 AWG: 2625 ft./0.5 miles (0.8 km); #24 AWG: 1,640 ft./0.31 miles (0.5 km). Systems
requiring more than one shielded, twisted pair cable for each Sub-station shall not be acceptable.
The security intercom sub-station shall be the TOA model RS-170.
2.3.6 PANIC SUB-STATION
The Panic Sub-station shall include a heavy-duty faceplate, momentary-action call switch,
loudspeaker and matching transformer. The faceplate shall be brushed stainless steel, #11
gauge. The call switch shall be vandal-resistant and shall include a red push button. Pushing and
releasing the sub-station’s call button shall initiate call-in to a pre-programmed Master Station,
Telephone Master Station or Master Station Group. The loudspeaker shall have a 1.57" (4 cm)
Mylar cone with a frequency response of 300 Hz to 4 kHz. The output sound pressure level at a
distance of 1 meter with 1 W of input power applied shall be 82 dB SPL. The matching
transformer shall be rated at 1 W at 25 V line with rated primary impedance of 625 ohms. The
sub-station shall include a red call LED that flashes immediately after pushing the call button and
lights continuously during conversation. A control output, 30 mA, 24 VDC, open-collector type,
shall activate immediately after pushing call button and remain active until call is cancelled. The
sub-station shall be weather-resistant for use in outdoor applications. The sub-station shall mount
to a two-gang electrical box with adapter ring using included #6-32 nickel-plated steel, slotted,
oval head mounting screws. The faceplate dimensions shall be 4.72" x 4.72" (120 mm x 120
mm). The sub-station shall maintain reliable operation in the ambient temperature range of +14
to +131 degrees F (-10 to +55 degrees C). The sub-station shall weigh 1.26 lb. (570 g).
Each Sub-station shall connect to a unique Sub-station Line Card port with a single, shielded,
twisted pair cable with maximum service distance as follows: #20 AWG: 4265 ft./0.81 miles (1.3
km); #22 AWG: 2625 ft./0.5 miles (0.8 km); #24 AWG: 1,640 ft./0.31 miles (0.5 km). Systems
requiring more than one shielded, twisted pair cable for each Sub-station shall not be acceptable.
The security intercom sub-station shall be the TOA model RS-180.