Consolidated Balance Sheets - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash	$ 52,000	$ 2,682,000
Trade accounts receivable, less allowances of $26 and $14, respectively	445,000	1,240,000
Inventories, net	5,476,000	7,866,000
Short-term deposits	592,000	712,000
Prepaid and other current assets	232,000	479,000
ERTC Funds, Current	445,000	445,000
Total current assets	7,242,000	13,424,000
Property and equipment, net	76,000	675,000
Operating lease, right-of-use asset	1,180,000	292,000
Total assets	8,498,000	14,391,000
Current liabilities:
Accounts payable	2,204,000	2,235,000
Accrued liabilities	145,000	265,000
Accrued legal and professional fees	0	104,000
Accrued payroll and related benefits	261,000	718,000
Accrued sales commissions	76,000	57,000
Accrued warranty reserve	183,000	295,000
Deferred revenue	0	268,000
Operating lease liabilities	198,000	325,000
Finance lease liabilities	0	1,000
Promissory notes payable, net of discounts and loan origination fees	2,618,000	1,719,000
Related party promissory notes payable	814,000	0
Credit line borrowings, net of loan origination fees	1,447,000	2,169,000
Total current liabilities	7,946,000	8,156,000
Operating lease liabilities, net of current portion	1,029,000	26,000
Total liabilities	8,975,000	8,182,000
STOCKHOLDERS’ EQUITY
Preferred stock, par value $0.0001 per share: Authorized: 5,000,000 shares (3,300,000 shares designated as Series A Convertible Preferred Stock) at December 31, 2022 and December 31, 2021. Issued and outstanding: 876,447 shares at December 31, 2022 and December 31, 2021	0	0
Common stock, par value $0.0001 per share: Authorized: 50,000,000 shares at December 31, 2022 and December 31, 2021. Issued and outstanding: 9,848,438 shares at December 31, 2022 and 6,368,549 shares at December 31, 2021	1,000	0
Additional paid-in capital	148,545,000	144,953,000
Accumulated other comprehensive loss	(3,000)	(3,000)
Accumulated deficit	(149,020,000)	(138,741,000)
Total stockholders' (deficit) equity	(477,000)	6,209,000
Total liabilities and stockholders' (deficit) equity	$ 8,498,000	$ 14,391,000