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Preliminary product.

Model 1151 ionization detector uses state-of-the-art sensing chambers. This detector is designed to provide open area protection, and to be used with compatible UL-listed control panels only. The capability of plugging this detector into a variety of special bases makes it more versatile than
equivalent direct-wired models. Two LEDs on each detector light to provide a local 360° visible alarm indication. Remote LED annunciator capability is available as an optional accessory. This detector also has the latching alarm feature. The alarm can be reset only by a momentary power interruption. For testing, this detector has an internal magnetically activated reed switch.