If a detector is specifically listed for door frame mounting, what type of detector is it?

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Multiple Choice

If a detector is specifically listed for door frame mounting, what type of detector is it?

Explanation:
Mounting placement and how a detector is listed for that placement matter because the sensing element and airflow path are validated for that exact location. If a detector is specifically listed for door frame mounting, it is designed to be installed on a door frame rather than on the ceiling, wall, or floor. This placement ensures the sensor is positioned to detect smoke or heat entering through the doorway, while using the hardware and mounting method rated for that surface. The listing confirms performance and reliability for that installation spot, which is why door frame mounting is the correct description.

Mounting placement and how a detector is listed for that placement matter because the sensing element and airflow path are validated for that exact location. If a detector is specifically listed for door frame mounting, it is designed to be installed on a door frame rather than on the ceiling, wall, or floor. This placement ensures the sensor is positioned to detect smoke or heat entering through the doorway, while using the hardware and mounting method rated for that surface. The listing confirms performance and reliability for that installation spot, which is why door frame mounting is the correct description.

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