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7.3. Optional Accessories
7.3.1. AN-9001 (Ceiling Mount Microphone)
The AN-9001 is designed to be mounted in a wall or ceiling with the use of a 1-gang electrical box.
It is used in conjunction with the AN-001T Ambient Noise Sensor Input module in the 9000 Series system.
[Front]
[Bottom]
[Side] [Rear]
Lock
Release
Hot
Cold
Earth
1
1. Microphone output terminal [Hot, Cold, Earth]
Electronically-balanced 3P removable terminal block.
Sensitivity: –5 dB (1 kHz, 0 dB=1 V/Pa)
Output impedance: 200 Ω
Note
In designing the layout of the AN-9001, pay particular attention to the following points so that the AN-9001 and
AN-001T in combination can function effectively.
• Position the AN-9001 fully away from the speaker to be used for zone announcement. Doing otherwise may
cause the AN-9001 to detect the speaker sound as noise, failing to keep the optimum sound level.
• Do not position the AN-9001 near the equipment that constantly generates loud noise. If positioned, the AN-
9001 will respond to such loud noise, failing to respond to the change in ambient noise level.