The 70 / 6E2 pump shown here is manufactured specifically for electric vehicles by MES Switzerland. The 70 / 6E2 has very low levels of noise and acoustic vibration and barely noticed during operation. The vacuum is controlled by an integrated control circuit consisting of a vacuum sensor and a solid-state vacuum switch. The 70 / 6E2 has an absolute pressure switch and will keep the preset vacuum level cycle on and off by itself between -600 mbar (17.7 ″ Hg) and -650 mbar (19.2 ″ Hg).