24 relays 16Amp, 1 Isollated Input, USB and COM Controlled, IA Daisy Chain Series

  • Power Relay Controller
  • 24 relay output and 1 Isolated Input
  • Fast Communication Rate
  • Extremely Short Latency time
  • 2500V Isolation on Input Channels
  • 16Amp Relay Contact Rating
  • Address & Status indicators
  • DIN-Rail Mounting ready
  • Easy Chaining


The IA-3157-U2i is an intelligent Power Relay Controller module, USB and RS-232 controlled, IA-3000 Series compatible. The IA-3157-U2i includes 24 power relays of 32VDC@16Amp and 250VAC@16Amp contact rating, as well as one Isolated Digital input with a choice of two different input ranges. The original IA- 3157-U2i Digital Input is in the range of 12-60VDC and 12-24VAC, while the extended module, IA-3157E-U2i has a Digital Input range of 90-250VAC. The module has a built in capability of daisy chaining additional RS-232 modules, Series-3000 compatible. Each module has a unique permanent ID number, and easily settable chain address, enabling a simple control over several modules, connected to a single USB or COM port. Drivers support: window 98 / 2000 / XP / 7 / Vista, CE and Linux 2.4