24 relays 1 Isollated Input USB and COM Controlled IA Daisy-Chain Series Intelligent Appliance Features 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 IA3157-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 24 Relays Contact current: Contact method: Digital Inputs Voltage Range: Isolation Voltage: Isolation Methode: Communication Host Interface Default Setting Communication Rate Daisy Chain Daisy Interface Communication Rate Daisy Wiring Ordering Information: GENERAL Power supply: Module size: Weight: IA-3157-U2i Power Relay Controller, USB or RS-232 controlled, USB cable and documentation CD included. RS-232 1200 to 115200 bps DB9 M/F pin-to-pin 3 wires, pin 2, 3 and 5, up to 15 meter long 24VDC 0.6 Amp 260x115x45 mm 710 gr IA-3157E-U2i Extended Digital Input range IA-3157-U2i module, USB cable and documentation CD included. IA-3157-2 Expansion Unit, RS-232 controlled only, COM cable and documentation CD included. IA-3157E-2 Expansion Unit, with Extended Digital Input range RS-232 controlled only, COM cable and documentation CD included. Specifications subject to change without notice.