Siemens 6ES7-540-1AB00-0AA0 Simatic S7-1500 CM PtP RS422/485 BA | RecycledGoods.com
New Original Authentic Simatic S7-1500 Cm Ptp RS422/485 Ba Communication Module 6es7540-1ab00-0AA0 PLC Module - China Communication Module, 6es7540- 1ab00-0AA0 | Made-in-China.com