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Technical Parameters: Number of channels: 12. Rated current: 2A / way greater current can be customized. Rated voltage: 240VAC / DC. Speed: 0-200rpm. Outer diameter: ø12.5mm. Contact material: Precious metal. Shell material: engineering plastics. Dynamic resistance: minimum 1mΩ. Electrical noise: <10mΩ, 50mA, 5RPM. Wire specification: AWG16 silver plated Teflon. Compressive strength: 500VDC @ 50Hz, 10s. Wire length: Standard 250 mm. Insulation strength: 500mΩ @ 500VDC, 10s. Protection class: IP54. Working temperature: -20 °C ~ +60 °C. Operating Humidity: 10% -85% RH. Earthquake level: MIL-STD-810E. Certification: SGS CE UL.