Red, two-wire, ceiling-mount horn strobe with selectable strobe settings

• Plug-in design with minimal intrusion into the back box
• Tamper-resistant construction
• Automatic selection of 12- or 24-volt operation at 15 and 15/75 candela
• Field-selectable candela settings on ceiling units: 15, 15/75, 30, 75, 95, 110, 115, 135, 150, 177, and 185
• Horn rated at 88+ dBA at 16 volts
• Rotary switch for horn tone and three volume selections
• Universal mounting plate for ceiling units
• Mounting plate shorting spring feature checks wiring continuity before device installation
• Electrically Compatible with legacy SpectrAlert devices
• Compatible with MDL3 sync module
• Listed for ceiling or wall mounting

Physical/Electrical Specifications:
- 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)
- Operating Voltage Range: (MDL3) 8.5 to 17.5V (12 V nominal) or 16.5 to 33 V (24V 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)
- Ceiling-Mount Surface Mount Back Box Skirt Dimensions (SBBCR, SBBCW): 6.9" diameter x 3.4" high (175 mm diameter x 86 mm high)