The PRIMA SGM -1P is A PERSONAL SAFETY GAS MONITOR which is small, lightweight, versatile and   as per IS:5780 for Intrinsic Safety monitoring any one gas from the table below.

It weighs less than 210 grams and 10 x 7 x 3½ cm in size. It is durable and hardy enough for use in harsh environments meeting the standards of Environmental Tests under IS:13109.