MODEL VTR-100E AC RMS VOLTAGE TRANSDUCERSPECIFICATIONS:0-150 VAC 50/60 hzMONITORS SINGLE PHASE POWER IN 2 WIRE CONFIG (GROUND NOT CONNECTED TO MONITOR)REQUIRES 110VAC INSTRUMENT POWERWITH ONE 4-20mA current output.GIVES TRUE RMS VALUE OF INPUT VOLTAGEcontact me and i can explain in more detail about how these are used.shipping weight is 3 pounds.
