Siemens B84299-K21The Siemens B84299 K21 is a highly versatile programmable logic controller (PLC) module from the S7 200 series, expertly engineered for small control applications in industrial environments. With support for RS 232 and RS 485 communication protocols, this module ensures effective connectivity. It boasts a substantial memory capacity of 64 KB, of which 32 KB is dedicated to user programs, complemented by 16 digital inputs and 4 digital outputs for