Smoke Detector 4WT-B

The SpectrAlert Advance SBBSPW is a white surface mount back box for wall installations.

L-Series, blue lens, used for any indoor ceiling-mountable strobes.

The SpectrAlert Advance MWBB is a red, wall-mounted, metal, weatherproof back box.

L-Series, red, ceiling-mountable, clear lens, chime strobe that is unmarked. Selectable strobe settings: 15, 30, 75, 95, 115, 150, and 177 cd

The SpectrAlert Advance HRK-R (replacement model) is a red, 12/24-volt horn for outdoor ceiling or wall installation. Offers mounting plate only - no back box included.

The L-Series SEP-SPSWL-P is a PLAIN, clear lens, white strobe and speaker strobe expander plate (full candela range) back box skirt.