Supply Of Isi Marked, Dlms Compliant, 3 Phase 4 Wire, 110 Volts, -/1 Amp And -/5 Amp Configurable, By Default -/5 Amp Static Electronic Tri-vector Abt Energy Meter Of Accuracy Class 0.2s, Along With Nb-iot / 4g Modem Having Fall Back To Gprs