Amazon.com: S7-300 Battery for Siemens 6ES7971-1AA00-0AA0 3.6V PLC Replacement Battery : Health & Household
Siemens SIMATIC S7 3.6 V backup battery For S7-300 CPUs - 6ES7971-1AA0 — RealPars
6ES7971-1AA00-0AA0 Siemens | Siemens - Battery for use with S5-90U Series, SIMATIC S7-300 Series | 628-888 | RS Components
What are the Differences Between SIMATIC S7-300 & S7-1500 PLCs? | RealPars
SIMATIC S7-300, CPU 315-2DP 1998-03-15... 1999-05-01 SIMATIC S7-300, CPU 315-2 DP CPU WITH INTEGRATED 24 V DC POWER SUPPLY, 64 KBYTE WORKING MEMORY 2ND INTERFACE DP-MASTER/SLAVE 16-Bit Single-Chip Microcontroller ...
Siemens 6ES7316-2AG00-0AB0 E:02 Simatic S7-300 CPU316-2DP used good, no front - CoSysS