This prototype is able to measure electricity at millivolts levels and potentially until 1 MHz frequencies (with the used processor). Possibilities of use are to prevent the fast and high frequencies of a seizure or the activities of electricity in the environment with a lot of devices or antennas. In the prototype electricity levels up of 1 Volt are signaled with a red light. It is possible to send the signals by bluetooth to a smartphone and reduce the device size. It functions with a USB connection or a small battery (>2V / For ex.: CR2032).