Product code : 6GK7342-5DA03-0XE0

Brand : siemens 

Communications processor CP 342-5 for connection of SIMATIC S7-300 to PROFIBUS DP,

S5-compatible, PG/OP and S7 communication

look to all details https : https://support.industry.siemens.com

and here you will find Similar items https ://www.ugarit-elektrik.co/ms300