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The IA-33xx is a Multi-Modules Daisy-Chain operating series, that includes various products as Relay boards, Analog Input and Output boards, Isolated and Non Isolated Digital Input boards, Motion Controllers and more. These products may be operated by a single COM port, USB port or LAN board, while operating up to 256 boards of this series.
| Module Name | Description | Daisy Chain | Control |
| IA-3304-U | 4-ch Relay Output & 4-ch Isolated Input | no | USB |
| IA-3307-2 | 8-ch, 8 bit, Analog Output, Buffered | no | RS-232 |
| IA-3308-U | 8-ch Relay Output, USB powered & controlled | no | USB |
| IA-3324-2 | 24-ch Digital I/O module, TTL | any element | RS-232 |