Manufacturer Part Number: EMF510|Meter Type|EMF/ELFDisplay Type|LCDMonitors|Electric Fields & RF StrengthMinimum Frequency|30HzMaximum Frequency|300HzBatteries Included|YesNumber Of Batteries|3Battery Size|Battery Chemistry|Accuracy|Features|Maximum Frequency (Hz)|300Maximum Frequency (GHz)|Minimum Frequency (MHz)|Minimum Frequency (Hz)|30Power Supply|Includes|EMF510; Wrist Strap; (3) AAA BatteriesUNSPSC Code|41113600PSC Code|6625