FMX-003 Hand-held Electrostatic Tester Infrared Electrostatic Field Tester
(range hysteresis: ±1.0kV to ±1.5kV). The status of the battery is shown on the display. Battery capacity display indicator. Bar graph precision: ±0.1kV for low range ±1.5kV for high range. ±1.0kV to ±20.00kV ( High range).