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The 2012/24AUSI is a photoelectric smoke alarm that is designed for open area protection. Up to 24 units may be connected together, to provide a system-wide alarm when any one 2012/24AUSI detects smoke.
These multi-voltage, 4 wire smoke alarms can be connected to many third-party devices such as security alarm systems and access control systems. The 2012/24AUSI is supplied complete with mounting ring and 9 Vdc back-up battery.