Sx405D RS485 Prepaid


RS485 communication interface and switching device, prepaid feature

Sx405D are three-phase and single-phase smart meters designed for measurement of electrical energy of residential consumers, with RS485 port and integrated switching module. They support both prepaid and postpaid mode. In prepaid mode, option for credit recharge over optical port is supported. Wide range of measurement values including power quality data in combination with large capacity of load profiles makes these meters a key tool for utilities for having insight in overall condition of low voltage network. RS485 port allows local communication with meter and remote communication with HES by connecting several meters to RS485 bus communicating with the center over Ethernet/RS485 gateway or similar. All functions are compliant with the following specifications and standards: IDIS, DLMS/COSEM, IEC 62052-11, IEC 62053-21/22/23, EN 50470-1/3 (MID), and M-Bus.

Key Features

  • RS485 communication port for two-way communication
  • Variety of additional input/output options available on demand (relays, pulse outputs, inputs e.a.)
  • Prepaid supported
  • 230 V/50 Hz or 110 V/60 Hz supported
  • Measurement of electrical values
  • High level data security
  • MID certificate
  • Measurement of energy quality
  • M-Bus port for G, W, H meters reading (Wireless M-Bus on demand)