Chauvin Arnoux VX0100 BioTest LF Electrical Field Tester. Suitable for use in the home or around the office, Chauvin Arnoux VX0100 is used to test the amount of electromagnetic pollution given off by electrical equipment. The Chauvin Arnoux VX0100 is the upgraded version of the VX0003. The main difference is in the inclusion of a removable 62mm field antenna, whereas the VX0003 has a built-in internal sensor inside its casing. The VX0100 model also has much wider detection range and can measure electromagnetic fields from 10Hz to 100kHz. Using the external sensor, it's also possible to detect cables due to the electromagnetic field they give off. All tests are carried out with current standards and directives, including 1999/519/CE, 2004/40/CE and others. The VX0100 has two measurement modes. You can either use the representative testing method to test field strength while taking the user's presence into account, or use the traditional measurement mode to measure field strength with fields referenced to earth.