PLC-BPT- 24DC/21-21 PLC-BPT-24DC/21 PLC-BSC- 24DC/21 PLC-BSC- 24DC/21-21 PLC-BSC- 24DC/21HC PLC-BSC- 24UC/21 PLC-BSC-120UC/21HC PLC-BSC-24DC/21 PLCC 20 PLCC 20 SMD