Standard Operating Temperature	32°F to 120°F (0°C to 49°C)
Humidity Range	10 to 93% non-condensing
Strobe Flash Rate	1 flash per second
Nominal Voltage	Regulated 12 DC/FWR or regulated 24 DC/FWR1
Operating Voltage Range2	8 to 17.5 V (12 V nominal) or 16 to 33 V (24 V nominal)
Input Terminal Wire Gauge	12 to 18 AWG
Ceiling-Mount Dimensions (including lens)	6.8˝ diameter × 2.5˝ high (173 mm diameter × 64 mm high)
Wall-Mount Dimensions (including lens)	5.6˝ L × 4.7˝ W × 2.5˝ D (142 mm L × 119 mm W × 64 mm D)
Horn Dimensions	5.6˝ L × 4.7˝ W × 1.3˝ D (142 mm L × 119 mm W × 33 mm D)
Wall-Mount Back Box Skirt Dimensions (BBS-2, BBSW-2)	5.9˝ L × 5.0˝ W × 2.2˝ D (151 mm L × 128 mm W × 56 mm D)
Ceiling-Mount Back Box Skirt Dimensions (BBSC-2, BBSCW-2)	7.1˝ diameter × 2.2˝ high (180 mm diameter × 57 mm high)
Wall-Mount Trim Ring Dimensions (sold as a 5 pack) (TR-HS, TRW-HS)	5.7˝ L × 4.8˝ W × 0.35˝ D (145 mm L × 122 mm W × 9 mm D)
Ceiling-Mount Trim Ring Dimensions (sold as a 5 pack) (TRC-HS, TRCW-HS)	6.9˝ diameter × 0.35˝ high (175 mm diameter × 9 mm high)

Model Description
Wall Horn Strobes
P2R*† 2-Wire Horn Strobe, Standard cd‡, Red
P2RH* 2-Wire Horn Strobe, High cd, Red
P2W* 2-Wire Horn Strobe, Standard cd, White
P2WH* 2-Wire Horn Strobe, High cd, White
P4R* 4-Wire Horn Strobe, Standard cd, Red
P4RH 4-Wire Horn Strobe, High cd, Red
P4W 4-Wire Horn Strobe, Standard cd, White
Wall Strobes
SR*† Strobe, Standard cd, Red
SRH*† Strobe, High cd, Red
SW* Strobe, Standard cd, White
SWH* Strobe, High cd, White
Ceiling Horn Strobes
PC2R* 2-Wire Horn Strobe, Standard cd, Red
PC2RH 2-Wire Horn Strobe, High cd, Red
PC2W*† 2-Wire Horn Strobe, Standard cd, White
PC2WH* 2-Wire Horn Strobe, High cd, White
PC4R 4-Wire Horn Strobe, Standard cd, Red
PC4RH 4-Wire Horn Strobe, High cd, Red
PC4W 4-Wire Horn Strobe,Standard cd, White
Ceiling Strobes
SCR Strobe, Standard cd, Red
SCRH Strobe, High cd, Red
SCW* Strobe, Standard cd, White
SCWH Strobe, High cd, White
Horns
HR Horn, Red