1900 Series self-contained monitors are designed to address less-critical machinery, where a multi-channel, rack-based system cannot be justified. These single-channel monitors accept seismic or proximity probe transducer inputs and provide a simple and cost-effective way to apply machinery protection on selected machines or points; there's even a special 4-channel version specifically designed to address cooling tower fans. The monitors are designed to operate as stand-alone units, or in conjunction with our Trendmaster® Pro online condition monitoring system.