4 Inputs, 4 Relays USB Controlled Module Intelligent Appliance 4 Relays 4 Isolated Inputs. Dry Contact Input. USB Powered and controlled. Easy Operated. Small footprint. Din Rail Moumted. INTRODUCTION The IA-3304-U is one of the IA-33xx Tiny Modules Series with 4 opto isolated digital inputs, which may be used as non isolated inputs as well, 4 SPST relays outputs and dry contact input. The common line is shared between each 2 relays, to ease the wiring efforts. Input type (Isolated or non-Isolated), is selected by an internal jumper. Status of each input and output is localy displayed and may be easily set by the suplied software. The module is software compatible to the IA-series. Digital Inputs Control Port Communication Method: Default BR: Relay Output: Relay Type: Contact Rating: Relay ON Time: Relay OFF Time Channels: GENERAL Supply Voltage: Module size: Weight: WIRING DIAGRAM Digital Inputs Voltage Range: Isolation: Chanels: Relay Outputs ORDERING IA-3304-U - 4 Relays,4 Digital Inputs USB Controlled Module and USB cable. Specifications subject to change without notice.