The system is manufactured and tested as per DGMS requirement mentioned in their circular No. 012010. Test reports will be provided along with the systems. Protection: The Audio Visual Alarm is water and Dust proof, Voltage Operation: The Audio Visual Alarm operates on 10V to 24VDC, LED Light: 300 LUX, The audio visual alarm is explosive proof and short circuit protection, The fire retardant cable has been used, Reverse Polarity protection.