UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Cash flows from operating activities:
Net loss	$ (8,666)	$ (8,177)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation and amortization	897	1,305
Gain on sales-type leases	(99)
Loss on change in fair value of derivative liability	25
Loss (Gain) on disposal of fixed assets	59	(54)
Provision for doubtful accounts	10	0
Write-down of inventories	124	0
Forgiveness of PPP loan		(586)
Stock-based compensation expenses	202	947
Warranty reserve	(30)	(35)
Amortization of ROU	565
Amortization of debt discount from convertible note	251
Changes in operating assets and liabilities:
Accounts receivable	442	(221)
Inventories	1,901	(3,532)
Prepaid expenses and other assets	989	(3,145)
Accounts payable	604	(541)
Accrued liabilities	20	(185)
Deferred revenue	(23)	(237)
Advance from customer	886	321
Lease liability	(735)
Amount due from related party	36	(103)
Net cash used in operating activities	(2,542)	(14,243)
Cash flows from investing activities:
Purchase of property and equipment	(162)	(722)
Proceeds from disposal of fixed assets		273
Loan made to a related party	(400)
Proceeds from repayment from a related party	400
Net cash used in investing activities	(162)	(449)
Cash flows from financing activities:
Repayment of borrowings		(7)
Proceeds from a related party	541	1,676
Repayment to a related party	(481)	(1,676)
Proceeds from IPO		13,438
Proceeds from capital injection by a shareholder		7
Proceeds from convertible notes	1,464
Proceeds from exercise of employee stock options		138
Proceeds received from standby equity purchase agreement	1,227
Net cash generated from financing activities	2,751	13,576
Increase (Decrease) in cash, cash equivalents and restricted cash	47	(1,116)
Cash, cash equivalents and restricted cash at beginning of the period	389	2,683
Cash, cash equivalents and restricted cash at end of the period	436	1,567
Reconciliation of cash, cash equivalents, and restricted cash to the consolidated balance sheets
Cash and cash equivalents	186	1,317
Restricted cash	250	250
Total cash, cash equivalents, and restricted cash	436	1,567
Supplemental cash flow information:
Income tax paid		7
Interest paid		6
Non-cash investing activities:
Inventories transferred to property and equipment	497	$ 75
Derivative liability recorded as debt discount	$ 294