For industry, SEALEVEL acquisition cards and units have a large number of Inputs / Outputs and relays, depending on the version: analogue or digital TTL, digital, Form C relays, Reed or dry contact. Isolated I / O or Opto isolated for equipment protection.
There are different options for connecting the boxes: USB, Ethernet, WiFi, RS422. Some versions are cascadable to increase the number of available channels. Note, SEALEVEL guarantees these products for Life under normal conditions of use.