Milltronics SF500 Integrator: full feature, powerful integrator designed for use with solids flowmeters. Input voltage: AC Voltage 100-240V Auxiliary input/ output (required for PID control and on-line calibration): none Feature Software: Standard Auxiliary Memory: none Data Communications: Smartlinx Ready Enclosure: standard enclosure, no entry holes Trade approval sticker: No trade approval sticker Approvals: Ordinary Locations/General Purpose (Non-Ex), CE, UKCA, CCSAUS, FM, RCM, EAC, KC