9. Revenue	12 Months Ended
Dec. 31, 2019
Notes
9. Revenue	9. Revenue The Company product revenue includes industrial wireless products and accessories such as antennas, power supplies and cable assemblies. The Company also provides direct site support and engineering services to customers, such as repair and upgrade of its products. During the years ended December 31, 2019 and 2018, the Company’s revenue from products sales was $1,367,171 and $1,374,810, respectively. Revenue from site support and engineering services was $41,377 and $20,220 respectively, over the same periods. The Company’s customers, to which trade credit terms are extended, consist of United States and local governments and foreign and domestic companies. Domestic sales for the fiscal year were $1,179,146 compared to $1,298,447 in 2018. Sales to foreign customers for the fiscal year were $229,402 compared to $96,583 in 2018. During 2019, sales to one customer represented more than 10% of total revenue. Sales to this domestic customer totaled $199,795 and were for products only. One customer had sales greater than 10% of total revenue in 2018 of $260,944 and were for products only. As of December 31, 2019 and 2018, the Company had a sales order backlog of $34,801 and $3,780, respectively.

9. Revenue

12 Months Ended

Dec. 31, 2019

9. Revenue

The Company product revenue includes industrial wireless products and accessories such as antennas, power supplies and cable assemblies. The Company also provides direct site support and engineering services to customers, such as repair and upgrade of its products. During the years ended December 31, 2019 and 2018, the Company’s revenue from products sales was $1,367,171 and $1,374,810, respectively. Revenue from site support and engineering services was $41,377 and $20,220 respectively, over the same periods.

The Company’s customers, to which trade credit terms are extended, consist of United States and local governments and foreign and domestic companies. Domestic sales for the fiscal year were $1,179,146 compared to $1,298,447 in 2018. Sales to foreign customers for the fiscal year were $229,402 compared to $96,583 in 2018.

During 2019, sales to one customer represented more than 10% of total revenue. Sales to this domestic customer totaled $199,795 and were for products only. One customer had sales greater than 10% of total revenue in 2018 of $260,944 and were for products only.

As of December 31, 2019 and 2018, the Company had a sales order backlog of $34,801 and $3,780, respectively.