Back Up Alarm, Self Adjusting 82–107 dB, 12–48 VDC, Universal Mount, Stud Connection, Whelen BU82107 Wear Pad Manufacturer Elkhart Brass Manufacturer part Sealco FM5575 Manufacturer Elkhart Brass Manufacturer part number 05000049 Model 5000 04E(D) Product type Fixed flow electric combination nozzle Rated flow 45 GPM Metric flow 170 LPM Rated operating pressure 100 PSI Metric operating pressure 7 bar Inlet size 1 1 2 inches Inlet connection Female NH thread Electrical connector Deutsch Monitor compatibility BrushHawk 8495 and compatible low flow monitors Material Aluminum Store SKU 0011980 Self Priming Applications helping maintain an effective reverse warning without producing more sound than operating conditions require Whelen rates the BU82107 to SAE Class F and states that it reassesses ambient noise approximately every half second