Condensed Balance Sheets - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 9,233,559	$ 6,540,794
Accounts receivable, net	399,895	382,258
Inventories, net	301,277	256,149
Prepaid expenses and other	784,720	695,276
Total Current Assets	10,719,451	7,874,477
Restricted cash	75,000	75,000
Deferred offering costs	131,976	144,582
Equipment, net	173,078	187,513
Total Assets	11,099,505	8,281,572
Current Liabilities:
Accounts payable and other accrued expenses	1,310,429	1,743,427
Derivative liabilities	157,927	3,661
Deferred revenue	25,840	1,990
Customer advance payments	84,117	106,609
Total Current Liabilities	1,578,313	1,855,687
Total Liabilities	1,578,313	1,855,687
Commitments and Contingencies
Stockholders’ Equity:
Common stock	1,710	1,245
Additional paid-in capital	57,536,979	51,720,630
Accumulated deficit	(48,011,033)	(45,289,526)
Treasury stock, at cost	(6,464)	(6,464)
Total Stockholders’ Equity	9,521,192	6,425,885
Total Liabilities and Stockholders’ Equity	$ 11,099,505	$ 8,281,572