Floyd Bell Turbo Series Alarm. Features:. Adjustable volume by rotating bezel. Tamper resistant front mounting case. Threaded attachment ring. Fits any 1" round aperture. Specs:. Maximum Amperage: 10A DC (plug), 15A DC (socket). Maximum Voltage: 24V DC. Operating Voltage: 5-30V DC. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.