SIMCO FMX-003 is a portable non-contact electrostatic field tester, built-in micro processor control, measurement accuracy, but lightweight and easy to use. Features: ES-002 can be measured in the range + / -20 KV, set with 2 LED lights to ensure the distance measurement standard 25mm. Case for the anti-static material and grounding buttons to ensure accurate and reliable measurement results, numbers and graphics clear. And can be measured with ion balance board, measuring ion generator residual voltage with a range of + /-200V. Specifications: Input voltage: 9V, 6F22 manganese battery electrostatic field can be measured: + / - (0.00-20.0 kv) (automatic adjustment) Standard distance: 25mm + /-1mm ion balance can be measured: + / - (0-200V ) measuring distance according to the ESD-STM3.1-2000 Ionization standard reaction time: 1 second LCD display update: 5 times per second Accuracy: + / -10% Working temperature and humidity :10-40 deg C / RH; 0-60% R graphics: Positive: Red / negative: blue data show that: electrostatic field (1): + / - X.XX (0.00 kV - 1.49 kV) electrostatic field (2): + / - xx.x (1.0 kV - 20.0 KV) Ion balance: + / - XXX (0-200V) audible alarm: Power on / automatic shutdown of idle idle for about 5 minutes measurement mode / range can be measured sensor is defective within the measuring instrument alarm is displayed: "ERR" Auto power off: Switching: electrostatic field: Click the Power button, a beep sound measurement of ion balance board: 0.07 kg weight / volume: 0.13kg / 11.5 cm x 6.5cm x 2.5 cm (with battery) ion balance measurement board: 0.07 kg Package: Conductive Resin (ABS).