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Abrams Tornado Installation Manual page 5

Low frequency siren system

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6、Functional specifications
6.1、Tone Duration
The alarm system is built-in with adjustable Timer from 8 to 64 seconds,
which is set by Timer Selection on the panel. Once activated, the
amplifier will produce tones for a period of time as determined, it will
automatically stop when that duration has been reached. The panel is
designed with 3 LED indicators. The currently selected time can be
identified by the LED indicators. Refer to Table 2 for LED display
information(Note: solid circle is LED light, hollow circle is LED light
off) 。
Table 2
6.2、Wiring
 Line position and function description
A
A Dir
Φ
1.1 Ten core plug
BRN- Speaker (+)
(WHT)-Activation Switch
Red- positive (+) battery
Blue - Voltage Detection
BLK- NEGATIVE (-) battery
Empty
WHT/BRN- Low Frequency Speaker (-)
Gray - Common Wire

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