Model slm800 is a high-output multifunctional electronic sounder developed with a multiple input technology that can produce two different tones (one per channel), controllable via wiring selection.There are 64 unique tones to select from across two switches (32 tones per switch). The volume of the tone is adjustable between 65-115 dBa @ 1m at three output levels (high, medium and low) through an integrated button. Model slm800 body material is a self-extinguishing polycarbonate material with high impact and UV resistance suitable for outdoor applications.* Recent changes have been made to this product line. Previous product data can be found in the documents below or by visiting slm Documents or Rev A Tones.