CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS AND SUPPLIERS - Note 5	9 Months Ended
Sep. 30, 2019
Risks and Uncertainties [Abstract]
CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS AND SUPPLIERS - Note 5	5. CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS AND SUPPLIERS Concentration of credit risk Financial instruments that potentially subject us to a concentration of credit risk are primarily cash equivalents and accounts receivable. We typically do not require collateral from our customers. As of September 30, 2019, our cash and cash equivalents are comprised of short-term highly rated money market savings accounts. Concentration of major customers and suppliers For the three and nine months ended September 30, 2019, one customer accounted for $823,000 and $3.7 million in revenue, representing 69% and 86% of our total revenue, respectively. A second customer accounted for $360,000 and $559,000 in revenue, representing 30% and 13% of our total revenue, respectively. For the three and nine months ended September 30, 2018, one customer accounted for $10.0 million in revenue, representing 86% and 63% of our total revenue, respectively. A second customer accounted for $1.5 million and $5.6 million in revenue, representing 13% and 35% of our total revenue, respectively. One customer accounted for $505,000, or 100% of our net accounts receivable balance at September 30, 2019. A significant concentration of our components and the products we sell are currently manufactured and obtained from single or limited-source suppliers. The loss of any single or limited-source supplier, the failure of any of these suppliers to perform as expected, or the disruption in the supply chain of components from these suppliers could subject us to risks and uncertainties including, but not limited to, increased cost of sales, possible loss of revenues, or significant delays in product deliveries, any of which could adversely affect our financial condition and operating results.

CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS AND SUPPLIERS - Note 5

9 Months Ended

Sep. 30, 2019

CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS AND SUPPLIERS - Note 5

5. CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS AND SUPPLIERS

Concentration of credit risk

Financial instruments that potentially subject us to a concentration of credit risk are primarily cash equivalents and accounts receivable. We typically do not require collateral from our customers. As of September 30, 2019, our cash and cash equivalents are comprised of short-term highly rated money market savings accounts.

Concentration of major customers and suppliers

For the three and nine months ended September 30, 2019, one customer accounted for $823,000 and $3.7 million in revenue, representing 69% and 86% of our total revenue, respectively. A second customer accounted for $360,000 and $559,000 in revenue, representing 30% and 13% of our total revenue, respectively. For the three and nine months ended September 30, 2018, one customer accounted for $10.0 million in revenue, representing 86% and 63% of our total revenue, respectively. A second customer accounted for $1.5 million and $5.6 million in revenue, representing 13% and 35% of our total revenue, respectively. One customer accounted for $505,000, or 100% of our net accounts receivable balance at September 30, 2019.

A significant concentration of our components and the products we sell are currently manufactured and obtained from single or limited-source suppliers. The loss of any single or limited-source supplier, the failure of any of these suppliers to perform as expected, or the disruption in the supply chain of components from these suppliers could subject us to risks and uncertainties including, but not limited to, increased cost of sales, possible loss of revenues, or significant delays in product deliveries, any of which could adversely affect our financial condition and operating results.