GSM-Enabled Laser Perimeter Alarm

I need a compact laser-based perimeter protection system for a commercial site that immediately calls a predefined phone number whenever the beam is interrupted. The solution must combine reliable laser... (Budget: ₹5000 - ₹10000 INR, Jobs: Arduino, Circuit Design, Electrical Engineering, Electronics, Embedded Systems, Firmware Development, Microcontroller, Prototyping)