The FX-I-9403 is a detachable, surface mounted sounder and strobe. The audio efficiency and sound distribution generate over 85 dB at 3 meter distance giving an excellent audibility from the device location. Using six highlights LED’s for high intensity visual alarm to warn the people. The FX sounder series are convenient plug and turn installing method, two part construction with base mounted termination allows easy installation and avoiding the wiring and connection problem associated with traditional sounder.