QM-4.5LV Seismometer For laboratory, school, office, field, or home use. The seismometer comes with a 15 ft (4m) serial cable, USB-Serial adapter, and a CD that includes Windows software and manual. Typically detects earthquakes with magnitude 6 up to 2500 miles (4000 km) away, magnitude 7 worldwide, and magnitude 3.5 up to 100 miles (150 km) away. Can also be used to monitor and record local low frequency noise caused by blasting, vehicle traffic, machinery vibrations, building vibrations, etc. Requires PC that is operating 24/7 to log and display data, but other programs can run on PC while the seismometer program is running. Works with Windows XP and above. The AmaSeis seismic Windows software is included on the CD. It also works with the new jAmaseis software that is available for Windows, Linux, and MAC OS. The seismometer sensor is a vertical geophone that located inside the metal box. The seismometer is self adjusting, and never needs alignment, zeroing, leveling, or any other adjustments. No external power supply required. Setup is minutes. You should install the seismometer on a flat ground-floor slab, located as far as possible from machinery and human traffic that may cause noise in the seismic band. Serial extension cables up to 100 ft can be used to connect it to your PC. For highest local noise reduction, place the seismometer in an underground insulated-vault in contact with bedrock.