10. REVENUES

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

REVENUES

10. REVENUES

For each of the identified periods, revenues can be categorized into the following:

	For the Nine Months Ended
	September 30,
	2020			2019
Product sales	$	3,948,801		$	4,607,237
Maintenance fees		18,877			8,432
Professional services		47,031			–
Discounts and allowances		(5,065	)		–
Total revenues	$	4,009,644		$	4,615,669

International revenues were $84,081, or 2% of revenues, and $0 during the nine months ended September 30, 2020 and 2019, respectively.

At September 30, 2020 and December 31, 2019, deferred revenue was $112,577 and $93,609, respectively. The September 30, 2020 balance consists of deferred maintenance fees pertaining to services to be provided through the third quarter of 2026.

At December 31, 2018, the Company accrued expected contract losses of $71,744 on an order for a customer that shipped in 2019. As the units were delivered, the loss accrual was proportionally reduced during the nine months ended September 30, 2019.