Speed:50RPM or Customized Channel number:6Channel Rated voltage:220VAC/DC Rated current:2A Operating temperature: -30 ℃ ~ +80 ℃ Contact material:gold Wire Size:AWG28#Silver-plated Teflon UL Wire length:standard 250mm Compressive strength:between the two channels≥300V 50Hz Insulation resistance:300MΩ/300VDC Dynamic resistance fluctuation value:minimum 10mΩ Shell material:Engineering plastics Working life:≥5 million rpm(depending on the working environment and speed)