System Sensor P2GRKLED-P — two-wire compact outdoor horn strobe in red, with a plain cover that carries no wording.It belongs to the L-Series with LED range rather than the older SpectrAlert Advance line, using an LED light source in place of a xenon flashtube. The enclosure holds its Type 4X and IP56 rating as a standalone device, so no sealed or caulked back box is needed for wet locations. Decode: P2 two-wire, G compact wall mount, R red, K outdoor, LED light source, plain cover Seven wall candela settings by rotary switch: 15, 30, 75, 95, 110, 135 and 185 cd Strobe current 18 mA at 15 cd rising to 120 mA at 185 cd, 16 to 33 VDC Eight tone and volume combinations, Temporal 3 at high volume rated 85 dBA Type 4X (UL50E), NEMA 4X (FM) and IP56 with no backbox Rated –40°F to 151°F, 24 VDC nominal, 1 flash per second P2GWKLED-P is the white version and P2GRKLED-B carries bilingual English and French wording. SGRKLED-P is the same compact wall unit without a horn, and PC2RKLED-P is the ceiling model, which carries a different candela set. Use the SBBGRL surface back box.