The IA-2522 is a dry contact I/O device, USB powered and controlled, with event counting ability.
The IA-2522 includes two Form C, SPDT relays, three digital inputs that may be used both as dry contact inputs and as TTL digital inputs. These inputs may be used as event counters input as well, and moreover, there is a third digital input that may be used at the same way of the first two inputs, or it may be used as a digital output.
Operating the IA-2522 is most simple. Its software support includes an API library, software examples and software utility for simple setting and configuration.
The IA-2522 can be easily controlled by ASCII commands, using popular IA-3000 series command set, and
moreover, it can be controlled by any RS-232 program written for the IA-3000 series.
Data Sheet Where to buy IA-2522