REVENUES

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

REVENUES

12. REVENUES

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

	For the Years Ended
	December 31,
	2021			2020
Product sales	$	8,574,096		$	6,024,274
Maintenance fees		44,068			30,957
Professional services		98,134			57,506
Shipping and handling		319,352			108,173
Discounts and allowances		(33,899	)		(10,560	)
Total revenues	$	9,001,751		$	6,210,350

International revenues were $0 and $84,081, or 0% and 1% of revenues, during the years ended December 31, 2021 and 2020, respectively.

During the year ended December 31, 2021 and 2020, 62% and 75% of revenues were derived from customers located in California, respectively.

At December 31, 2021 and 2020, deferred revenue was $253,751 and $107,489, respectively. These amounts represented customer deposits in the amount of $91,651 and $0 for December 31, 2021 and 2020, respectively and prepaid multi-year maintenance plans for previously sold products which account for $162,100 and $107,489 for December 31, 2021 and 2020, respectively and pertain to services to be provided through 2027. Revenue recognized during the year ended December 31, 2021 and 2020 which pertained to revenue deferred in prior years were $37,778 and $19,459, respectively.