Siemens Simatic S7-200
Siemens S7-200 SMART is a micro-PLC you tailor on a DIN rail: choose an SR/ST CPU with 12–60 I/O, clip on digital, analog or temperature expansion modules, plug in RS-485/Ethernet signal boards; 32 kB program memory, real-time clock, free STEP 7-MicroWIN SMART software and built-in motion/PID let you run conveyors, packaging or HVAC without extra cards, while prices start near ₹11 k for 12 DI/8 DO models and stock is normally same-day dispatch