TWI Series 2-Wire Satellite Interface

The Two-Wire Interface (TWI) serves as an interface between the Central Controller and ESP-SAT Satellite Controller on the SiteControl System.


  • Allows real-time, two-way communication between SiteControl Central Controller and field satellites
  • Allows use of advanced in-field capabilities of ESP-SAT twowire or LINK versions
  • Modular capacity can grow with the site


Electrical Specifications

TWI Hardwire

  • Output: 2 x 26.5VAC @ 0.9A 60/50Hz or 4 x 26.5VAC @ 0.9A 50/60Hz
  • Circuit Breaker: NA (Autoresettable)

TWI Link

  • Input required: 120VAC ± 10% @ 1.25A 60/50Hz or 220/230/240VAC ± 10% @ .5A 50/60Hz
  • Output: NA
  • Circuit Breaker: NA
  • Grounding: All TWIs shall be grounded to a 10-ohm or less earth ground


  • Width: 15½” (39,4 cm)
  • Height: 12½" (31,7 cm)
  • Depth: 6" (15,2 cm)


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