![2551-a](https://www.napa.fr/en/wp-content/uploads/2012/06/2551-A_large.jpg)
2551-A
The 2551-A is a high-speed 8-channel isolated thermocouple input module compatible with the CTI 2500 Series® or Simatic® 505® I/O base. The 2551-A translates thermocouple input signals into scaled temperature values and millivolt input signals into equivalent digital words.