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.
The L-Series HRL-LF (red) and HWL-LF (white) are 2-wire, 24 volt, 520Hz, wall sounders.
The SpectrAlert® Advance MHW is the white, 12/24-volt mini-horn used where a smaller notification device is desired.
The SpectrAlert Advance P4RK is a red, four-wire, outdoor horn strobe with selectable strobe settings of 15, 15/75, 30, 75, 95, 110 and 115 cd.
L-Series, red, ceiling-mountable, clear lens, speaker strobe marked "FIRE". Selectable strobe settings: 15, 30, 75, 95, 115, 150, and 177 cd.
The SpectrAlert Advance SPSRK is a red, outdoor speaker strobe for wall installations with selectable strobe settings of 15, 15/75, 30, 75, 95, 110 and 115 cd.
The SpectrAlert Advance SPSCWK-R (replacement model) is a white, outdoor speaker strobe for ceiling installation with selectable strobe settings of 15, 15/75, 30, 75, 95, 110 and 115 cd. Offers mounting plate only - no back box included.