ARG 45

ARG 18


Ami Tech’s Automatic Meter Reader ARG-45 is the latest of its AMR series based on GSM/GPRS communication technology and has built-in intelligence. The ARG-45 is a compact, rugged unit, mainly designed to read data from remote energy meters installed at sites of LT/HT consumers, feeders, boundary points, Solar, Wind farms, etc.

ARG-45 can be supplied as an intelligent or non-intelligent transparent modem for automatic meter reading applications. The device can automatically detect most of the Indian energy meters and reads the data at configurable time intervals and schedules. Ami Tech’s AMR supports data reading from various legacy meters and DLMS meters automatically and will push the data to a remote Meter Data Acquisition System. The AMR can be used for push and pull type of data transfer methods. ARG-45 is indigenously designed and developed by Ami Tech (India) Pvt. Ltd., a leading Indian AMR manufacturer. This AMR supports meters with protocols like PACT, MODBUS, IEC, ANSI, DLMS/COSEM, etc.

Salient Features

  • GSM/GPRS communication capabilities
  • Plug-n-play installation with automatic meter detection for various legacy and all Indian DLMS meters
  • In-built protocol stack to read, store and forward meter data to HES
  • Built-in SMPS power supply, operates from 90V to 470V AC (1Ø & 3Ø operation)
  • Automatic AT-interfacing and GPRS enabling
  • Alert generation for:
    • Modem power failure occurrence and restoration
    • Modem to meter communication failure occurrence and restoration
    • DT power failure occurrence and restoration
  • Online tamper alerts for DLMS meters
  • Time synchronization with HES or Network
  • Remote modem configuration using GSM-SMS through configured master mobile number
  • Remote modem configuration using GPRS or socket based communication
  • Configurable schedule and on-demand meter data reading
  • Automatic meter data packet restoration if GPRS connection fails using append feature
  • Exhaustive diagnosis data for modem performance tracking
  • Firmware Over The Air (FOTA) feature for remote firmware upgradation
  • Auto restart feature using hardware Watch Dog Timer (WDT) in case modem fails to respond

Technical Specifications

Input Power Supply

  • Input Voltage: 90V AC to 470V AC 3Ø and 1Ø, 240V, 50 Hz mains
  • Maximum power consumption is less than 3VA during data transmission
  • Can withstand surge voltages up to 6KV and impulse voltage up to 8KV as per IEC61000-4-4 : 2012
  • RF / EMI conforms to IEC61000-4-3 : 2010
  • Power cable: 3-phase, 4 - wire, 1 meter length


  • Quad band 850/900/1800/1900 MHz
  • GPRS multi-slot class 10/12
  • GPRS mobile station class B
    • Compliant to GSM phase 2/2+
    • Class 4 (2 W @ 850/900 MHz)
    • Class 1 (1 W @ 1800/1900 MHz)
  • Dimensions: 15.8mm x 17.8mm x 2.4mm
  • Weight: 350 grams
  • Control via AT commands (3GPP TS 27.007, 27.005 and enhanced AT Commands)
  • Supply voltage range: 3.4V ~ 4.4V
  • Low power consumption

GSM/GPRS Data Specifications

  • GPRS class 12: max. 85.6 kbps (downlink/uplink)
  • PBCCH support
  • Coding schemes: CS 1, 2, 3, 4 PPP-stack
  • CSD up to 14.4 kbps
  • USSD Non-transparent mode

SMS features

  • Point to point MO and MT
  • SMS cell broadcast
  • Text and PDU modes

Software features

  • Embedded TCP/UDP protocol

EMI/EMC Specifications

  • Electrostatic Discharge as per IEC61000-4-2
  • Fast Transient Burst as per IEC61000-4-4
  • Surge Immunity as per IEC61000-4-5
  • Conducted Emission as per CISPR22 (class B)

SIM Card

  • Push to lock & push to release type SIM card holder, accessible without opening the top cover
  • Accepts both 3V and 1.8V standard SIM cards
  • Supports hot swapping of SIM cards
  • SIM card has sealing arrangement


  • RS232 port through DB-9 connector which also provides probe power
  • Optional RS485 port
  • SMA connector to interface with external antenna of required gains (Default is 5dBi)
  • LED for Network Status
  • LED for Transmit data
  • LED for Receive data
  • LED for Power ON/OFF status


  • Optional built-in Li-ion battery (3.7V, 450mAh) for sending power fail alerts

Mechanical Specifications

  • Dust proof and rain proof enclosure of Engineering plastic with IP-55 classification
  • Dimensions 175 X 87 X 45mm (L x W x H).
  • Supports both wall and horizontal mounting
  • Enclosure has sealing arrangement

Environmental Specifications

  • Operating temperature: -10 °C to 60 °C
  • Storage temperature: -20 °C to 70 °C
  • Humidity: up to 95% RH (Non-condensing)
  • Withstands vibration of 2g and shock of 40g