ABACUS ELECTRICS designed and manufactured specialist electronic instruments for a variety of industries between 1977 and 2016.  Since 1993 it has manufactured optical probes for reading and programming electricity and gas tariff meters

ANSI Probes
IEC Probes
PACT Probes
USB Probe Drivers
  The de-regulation of Electricity and Gas supply has encouraged the use of intelligent tariff meters - smart meters - that can be read electronically.  ABACUS ELECTRICS optical probes are bi-directional communications devices utilising infra-red light.  Connecting to a computer or hand-held terminal they permit galvanically isolated communication with electricity and gas smart meters.

ANSI Type 2 probes are available for tariff meters designed to the American National Standard ANSI C12.18-2006 (also Australian Standard AS 1284.10.2-2006).

IEC probes are available for tariff meters with optical ports designed to the European IEC62056-21:2002 standard (formerly the IEC1107:1996 standard).  Probes of this type are used with electricity meters throughout Europe and with gas meters/volume correctors worldwide.