Patlite (USA) Corporation Electronic Sounders BSV-24P-D

Only 19.9 mm (0.078 In.) Thick — Will Fit into Tight Spaces More Narrow Then Many Push-Button Switches 75 mm (3 In.) Square Up to 87 dB (@ 1 m) with Sound level reduction: –5, –10, or –20 dB Choose from 15 Pre-Recorded Sounds or Program Your Own Easy to Program with SD Card (Not Included) and MP3 Files 63 Second Recording Time @ 64 kbps Patented Self-Tightening Mounting System for Easy Installation 12-24 VDC Rated Voltage, 3.5 Watt Power Consumption