System Sensor PC2WK — SpectrAlert® Advance outdoor selectable-output horn strobe: 2-wire, ceiling mount, standard candela, white housing with “FIRE” marking. Supplied with the outdoor weatherproof back box that its outdoor UL listing requires.
The PC2WK may be used indoors or outdoors in wet or dry applications. It uses the SpectrAlert Advance plug-in design with a universal mounting plate whose onboard shorting spring tests wiring continuity before the device is installed, and a rotary switch for horn tone and three volume selections.
Specifications
| Type |
2-wire horn strobe, standard candela, white, outdoor — ceiling mount |
| Candela settings (field-selectable) |
15, 15/75, 30, 75, 95, 110, 115 cd |
| Nominal voltage |
Regulated 12 DC/FWR or regulated 24 DC/FWR |
| Operating voltage range |
8–17.5 V (12 V nominal) or 16–33 V (24 V nominal) |
| Horn output |
88+ dBA at 16 V |
| Strobe flash rate |
1 flash per second |
| Operating temperature |
−40°F to 151°F (−40°C to 66°C) |
| Weatherproof rating |
NEMA 4X, IP56 |
| Dimensions (including lens) |
6.8″ diameter × 2.5″ high (173 mm × 64 mm) |
| Ceiling back box (SA-WBBC) |
7.1″ diameter × 2.0″ high (180 mm × 51 mm) |
| Input terminal wire gauge |
12 to 18 AWG |
| Listings |
UL 1638 (strobe), UL 464 (horn) |
Installation notes
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12 V operation: PC-series products operate at 12 V nominal only at the 15 and 15/75 cd settings.
-
Sound settings: switch positions 1–6 (temporal and non-temporal, three volume levels each). Coded settings 7–9 are not available on 2-wire horn strobes.
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Outdoor listing: the device must be installed with its weatherproof back box to remain outdoor approved per UL. When replacing standard outdoor units, both the device and the back box must be replaced.
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Low-temperature derating: the 15, 15/75 and 30 cd settings must not be used below 32°F. At −40°F, 75 cd derates to 44 cd and 95 cd derates to 70 cd; 110 cd and 115 cd are unaffected.
Related models
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PC2WHK — high candela range (135, 150, 177, 185 cd), white, outdoor
-
PC2RK — red housing, standard candela
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PC4WK — 4-wire version, standard candela, white
- Add -P for a plain housing with no “FIRE” marking. Add -R for a weatherproof replacement device without back box, for use with the WTP / WTPW outdoor flush mounting plate.
Specifications taken from the System Sensor data sheet “Outdoor Selectable-Output Horns, Strobes, and Horn Strobes,” document A05-0456-002 (11/09). Manufacturer specifications are subject to change without notice.
