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The 5151 thermal detector meets the needs for applications where rapid response is vital and rapid temperature increases would only be caused by a fire emergency.

L-Series, red, wall surface-mountable back box for speakers and speaker strobes.

L-Series, red, ceiling-mountable, clear lens, 2-wire, horn strobe marked "FIRE". Selectable strobe settings: 15, 30, 75, 95, 115, 150 and 177 cd.

SWIFT® white, wall mount AV Base for use with System Sensor L-Series AV devices.

L-Series, white, ceiling-mountable, clear lens speaker strobe marked "FUEGO". Selectable strobe settings: 15, 30, 75, 95, 115, 150, and 177 cd.

L-Series, white, ceiling-mountable, clear lens, speaker strobe that is unmarked. Selectable strobe settings: 15, 30, 75, 95, 110, 135, and 185 cd.

The SpectrAlert Advance SA-WBB is a separate ship, wall-mount, outdoor back box.

The SD-651 is designed to meet the performance criteria designated by UL. Its sensing chambers are sealed against back pressure air flow, dirt, and insects.