Sierra Monitor Corporation addresses the industrial and commercial facilities management market with Industrial Internet of Things (IIoT) solutions that target facility automation and facility safety requirements.
For the fiscal year ended December 31, 2018, our net sales were $22,075,409 compared to net sales of $19,770,158 in the prior fiscal year ended December 31, 2017. Net sales increased approximately 11.7% in 2018 compared to the prior year. Our income from operations before interest income and income taxes was $343,244 in 2018, compared to an operating loss before interest income and income taxes of $339,382 in 2017. Net income in 2018 was $169,760, or $0.02 per share, compared to net loss of $377,596, or $(0.04) per share, in 2017.
Sales of our FieldServer products increased approximately 14% in 2018 compared to 2017. FieldServer products are primarily sold to OEMs who develop a broad range of products relevant to facility automation, such as boilers, chillers, air handlers, lighting controls, generator sets, electric sub-meters, etc. FieldServer products are also bought by system integrators seeking to connect various discrete automation sub-systems to a common facility management system. The increase in sales was mostly attributable to an increasing number of design wins from our OEM customers coupled with growth in device sales attaching to our cloud solution. In addition, we introduced new products which were well received in the market. In 2018, revenue from FieldServer products was approximately 52% of our sales compared to approximately 51% in 2017.
Our sales of Sentry gas detection products, including sales to the military, increased approximately 14% in 2018 compared to 2017. Sentry products are generally sold to engineering and installation firms who utilize the products as part of larger fire and safety projects in a variety of facilities, such as oil, gas and chemical processing plants, wastewater treatment facilities, alternate fuel vehicle maintenance garages, and other sites where hazardous gases are used or produced. Flame and Gas sales increased primarily due to success and focus in those key markets and our total solution featuring our Sentry IT. Our focus in those markets has allowed us to expand our customer base and corresponding footprint in the product line. Revenue from gas detection products was approximately 44% of our sales in 2018 compared to 43% of our sales in 2017.