Combination dual LED flasher and multi-tone signaling device - 444 Series. This multi-tone signaling device is combined with a dual LED flasher. Tone output is adjustable up to 110 dB with 32 tones for versatile applications. Three tones can be triggered externally, and visual and audible signals can be triggered separately. It can be wall, base, or ceiling mounted and has a lifespan of up to 50,000 hours (dual LED flasher). The tone types and frequencies are selectable via DIP switch.