Home Services Contact Us Fire Industry News Fire Industry Links How Does It Work ? FAQs In Case Of Fire Training Fire Industry Links    National Fire Protection Association    National Association of Fire Equipment Distributors    FireExtinguisher.com    Amerex Products    Fire Equipment Manufacturers Association    Occupational Safety & Health Administration     1159 S Soto St . Los Angeles . CA . 90023-2198 . 323-263-6954   FAQs How Do Ionization Smoke Detectors Work? Why does smoke come from a fire? How do multi-class dry chemical fire extinguishers work? How Do Photoelectric Smoke Detectors Work?