The IA-3157-U2i is an intelligent Power Relay Controller module. This module is both USB and RS-232 controlled and IA-3000 Series compatible.
The IA-3157-U2i features 24 power relays of 32VDC@16Amp and 250VAC@16Amp contact rating, as well as one Isolated Digital input enabling a choice of two different input ranges.
The original IA- 3157-U2i Digital Input range is 12-60VDC and 12-24VAC, while the extended module, IA-3157E-U2i has a Digital 90-250VAC Input range.
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