Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash	$ 2,030	$ 52
Inventories, net	4,439	5,476
Prepayments to vendors	792	592
Prepaid and other current assets	156	232
Receivable for claimed Employee Retention Tax Credit	0	445
Total current assets	9,189	7,242
Property and equipment, net	112	76
Operating lease, right-of-use asset	899	1,180
Total assets	10,200	8,498
Current liabilities:
Accrued liabilities	110	145
Accrued legal and professional fees	64	0
Accrued payroll and related benefits	199	261
Accrued sales commissions	62	76
Accrued warranty reserve	150	183
Operating lease liabilities	223	198
Promissory notes payable, net of discounts and loan origination fees	1,323	2,618
Advanced capital contribution	450	0
Credit line borrowings, net of loan origination fees	0	1,447
Total current liabilities	6,351	7,946
Operating lease liabilities, net of current portion	798	1,029
Total liabilities	7,149	8,975
STOCKHOLDERS' EQUITY (DEFICIT)
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, 2023 and December 31, 2022, Issued and outstanding: 876,447 shares at December 31, 2023 and December 31, 2022	0	0
Common stock, par value $0.0001 per share: Authorized: 50,000,000 shares at December 31, 2023 and December 31, 2022 Issued and outstanding: 4,348,690 shares at December 31, 2023 and 1,406,920 shares at December 31, 2022	0	1
Additional paid-in capital	156,369	148,545
Accumulated other comprehensive loss	(3)	(3)
Accumulated deficit	(153,315)	(149,020)
Total stockholders' equity (deficit)	3,051	(477)
Total liabilities and stockholders' equity (deficit)	10,200	8,498
Nonrelated Party
Current assets:
Trade accounts receivable	1,570	445
Current liabilities:
Accounts payable	1,624	2,204
Related Party
Current assets:
Trade accounts receivable	202	0
Current liabilities:
Accounts payable	2,146	0
Related party promissory notes payable	$ 0	$ 814