The compellingly priced PRM-7000 provides essential nuclear radiation awareness during a nuclear accident, event or emergency. The instrument is built upon the same long battery life, made in the US, platform as the PRM-8000 and PRM-9000, which have been the choice of governments, organizations and individuals around the world. The instrument is designed to similar specifications as devices used to address the radiation hazards faced by firefighters, HAZMAT teams, paramedics and other first responders. The PRM-7000 can be calibrated to the official international standards of accuracy required for regulatory work. Note, this product is not the best choice for testing food please consider the PRM-9000. Mazur Instruments uses only genuine detector tubes in all of its products, made in the US, by LND and does not rely on imported, cloned or "knock-off" detector tubes present in some lower priced products. The PRM-7000 is designed to be always-on collecting measurements and statistics enabling rapid environment assessment. Using only one key, users can scroll through several screens that display present, average, maximum and minimum measurements in uR/hr, mR/hr, uSv/hr, Counts per Second (CPS) or Counts per Minute (CPM), as well as time/date of maximum. The supplied standard alkaline 9-volt battery provides. The PRM-7000 can autonomously store up to 91,466 minutes or hours of time-stamped measurements. These measurements can then be uploaded to a PC in CSV format for analysis. A user-settable dose rate alarm sounds an audible alert when the measured radiation level exceeds that of the alarm level setting. The PRM-7000 includes abundant I/O options including support for headphones, external speakers, external power and PC/Mac USB data exchange (requires optional 3.5mm to USB adapter cable). Minimum energy sensitivity (35 keV). Gamma sensitivity: 450 CPM/mR/hr (Cs-137).