Horn Outdoor HRK is a Fire Alarm System US having Operating Voltage Range 8 to 17.5 V (12V nominal) or 16 to 33 V (24 nominal) and Operating Temperature

Specifications
Color

Red​​
DC Max Op Current

(see Data Sheet for complete current draw information)
Dimensions

5.6″L x 4.7″W x 1.3″D (142 mm L x 119 mm W x 33 mm D)
FWR Max Op Current

(see Data Sheet for complete current draw information)
Location

Outdoor

Horn Outdoor HRK Fire Alarm System US Operating Temperature

Maximum Humidity

10 to 93% non-condensing
Mounting

Wall or Ceiling​
Operating Temperature

-40°F to 151°F (-40°C to 66°C)
Operating Voltage Range

8 to 17.5 V (12V nominal) or 16 to 33 V (24 nominal)
Outdoor Device Type

Horns​​
Series

SpectrAlert Advance
Voltage

Regulated 12DC/FWR or regulated 24DC/FWR
Wall Mount with Box

5.7″L x 5.1″W x 2.0″D
Wiring Gauge

12 to 18 AWG