Designed for use in demanding environments, the WIKA S-20 transmitters feature high accuracy and a rugged design. These units are very reliable in harsh environments, including extreme shock, high vibration, and aggressive media, as well as general industrial applications. Versatile 4-pin DIN electrical connections provide easy wiring. Models with a 1/2" NPT(M) process connection have a standard DIN connection; models with a 1/4" NPT(M) process connection have a mini-DIN electrical connection.