The FMX-004 is a convenient compact and pocket size electrostatic field meter. With this field meter you can measure and store the field strength and polarity. It enables you to carry out measurements in awkward places. The correct measuring distance is displayed by two integrated LED. The electrically conductive plastic housing with an earth connection fitted at the side ensures accurate measurements. The unique bicolour display shows the measured value both numerical and graphically. The status of the battery is shown on the display . FMX-004 electrostatic field reflectoscope reflector is a non-contact portable electrostatic field measuring instrument is surveys the object surface static electricity value and the survey static electricity eliminates equipment's ion trim. 1. Easy to read, easy to use operation; 2. Light weight, compact design; 3. Range light assures accurate and repeatable measurements; 4. Digital and bar graph display; 5. Automatic power off after five minutes (may be disabled if preferred); Specification: Measuring range: 0 to ±1.49KV ( Low range) ±1.0kV to ± 30.00kV ( High range) (range hysteresis: ±1.0kV to ±1.5kV) 0 to ±300V ( low balance measuring range) Measuring distance: 1"±1/64" ( 25mm±0.5mm), LED guide for correct distance ( between object and field meter); Response time: