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Federal Signals Model SLM800 is a high-output multifunctional electronic sounder developed with a multiple input technology that is capable of producing two different tones (pre-alarm, alarm) controllable via independent electric contacts. Model SLM800 offers a high acoustic performance through 2 channels offering 64 tones, 32 tones per input selectable via dip switch. Both channels offer a powerful electronic tone adjustable from 65 to 155 dBa at one meter. Model SLM800 body material is a self extinguishing polycarbonate material with high impact and UV resistance suitable for outdoor applications. To complete your signal, a Federal Signal StreamLine Modular Base SLMBD, SLMBP, SLMBS, SLMBT or SLMBW is required.