... regis DMM28 (DD28) single phase mechanical kilo watt-hour meter is applicable to measure 50 Hz or 60 Hz active ... steel, bakelite etc; Meter terminal block is made of quality bakelite material which is moisture-resistant, fire-retardant, high temperature molded. 3. May ... different specifications,we can make according to your special requirements. DIN RAIL KWH METER,Din rail watt-hour meter,watt-hour ...