Temporal Horn Finish White Surface or Flush Mounting Alarm Current 40mA Peak Output (dBA) 85 Depth (In.) 2 1/4 in Height (In.) 5 1/2 in Length (In.) 5 1/2 in Ambient Temp Limits (F) -40 to 150 Degrees Humidity Range ( Percent RH) 98 Voltage 24V DC FWR Standards CSFM UL ULC