OOHC941 SIEMENS Combo Dual Optical Heat-Carbon Monoxide Detector

Siemens OP121 Conventional Photoelectric Smoke Detector.

The microprocessor-controlled, self-diagnostic circuitry contained in the Siemens photoelectric (conventional) smoke detector, Model OP121, eliminates an installer’s need of using burdensome sensitivity-test equipment. The Model OP121 auto-sensitivity feature originates from its internal, self-monitoring circuitry, providing dynamic verification of sensitivity and / or required maintenance.

This detector-type is commonly found on the following Siemens – Fire Safety fire alarm control panels: TXR-320, System 3 and SXL. Model OP121 contains a magnet-test feature, and has optional relay and sounder bases.

Model OP121 is UL 268, ULC S529 Listed, as well as Factory Mutual (FM) and California State Fire Marshals’ (CSFM) Approved.

Specifications

Features

• Magnet-test feature
• Incorporates one (1) state-of-the-art chamber for rapid, uniform response to alarm criteria (i.e. – smoke)
• Automatic sensitivity test without the need for a special tester (per NFPA 72)
• Available optional sounder base, providing an alert and evacuation signal
• UL 268 Listed [for open-area protection], UL 268A Listed [for direct in-duct use], ULC 529 Listed; FM, CSFM Approved

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