CR Magnetics CR4510-150 True RMS AC Voltage Transducer with Single Element, 20 Hz - 5 KHz, &gt;= 2K  Output Load, 24 VDC +/-10%, 0-150 VAC Input Range, 0 - 5 VDC Output Range True RMS measurement for distorted alternating current waveforms 0.5% FS accuracy Response time of 250 ms (10-90% step change) DIN rail or panel mounting options UL Recognized and CE certified for quality assurance