The Gentex GEC3 - 24WW Wall Mount Combination Horn/Strobe is designed to reduce installation and operation costs without sacrificing performance or reliability. The GEC3-24WW can switch from low to high dBA with a number of changeable alarm tones. This horn/strobe also features the Checkmate instant voltage verification system, a SuperSlide bracket for easy, supervised testing, and a tamper proof reentrant grill. The horn/strobe can be sychronized with the control module, and the alarm can be muted while the strobe continues flashing. Also known as -Gentex Corp. HRN/ STB, WALL MNT, WHITE - GN-GEC324WW