Consolidated Balance Sheets - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash	$ 2,005,000	$ 2,799,000
Accounts receivable, net	6,191,000	8,337,000
Inventories, net	13,050,000	14,753,000
Prepaid expenses and other current assets	780,000	626,000
Total current assets	22,026,000	26,515,000
Property and equipment, net	2,096,000	3,237,000
Intangible assets, net	4,691,000	6,894,000
Total assets	28,813,000	36,646,000
Current liabilities
Accounts payable	7,072,000	10,918,000
Accrued expenses	2,112,000	3,150,000
Convertible notes payable		2,000,000
Convertible promissory notes, net of discount of $16 and $-0-, respectively	400,000
Due to related parties	361,000	998,000
Customer deposits and deferred revenue	1,574,000	634,000
Obligation under capital lease		18,000
Derivative liabilities	1,118,000	2,399,000
Total current liabilities	12,637,000	20,117,000
Obligation under capital lease, net of current portion		30,000
Convertible promissory notes, net of discount of $47 and $-0-, respectively	5,886,000
Total liabilities	18,523,000	20,147,000
Commitments and contingencies (See Note 16)
Stockholders' equity
Preferred stock - $0.00001 par value per share: 10,000,000 shares authorized at December 31, 2018 and 2017; -0- shares issued and outstanding as of December 31, 2018 and 2017
Common stock, - $0.00001 par value per share, 100,000,000 shares authorized, 18,776,980 and 14,897,392 shares issued and 18,776,978 and 14,897,390 outstanding at December 31, 2018 and 2017, respectively
Additional paid in capital	244,562,000	235,819,000
Accumulated other comprehensive income	275,000	354,000
Treasury stock, at cost - 2 shares as of December 31, 2018 and 2017, respectively	(22,000)	(22,000)
Accumulated deficit	(234,525,000)	(219,652,000)
Total stockholders' equity	10,290,000	16,499,000
Total liabilities and stockholders' equity	$ 28,813,000	$ 36,646,000