Condensed Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net loss	$ (203,000)	$ (43,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	43,000	46,000
Amortization of debt issuance costs	63,000	59,000
Provision for slow moving and obsolete inventory	19,000	42,000
Share-based payment expense	23,000	36,000
Changes in:
Accounts receivable	74,000	(48,000)
Inventory	113,000	93,000
Prepaid expenses and other current assets	54,000	19,000
Accounts payable	(26,000)	3,000
Accrued expenses and other current liabilities	(13,000)	(6,000)
Wages payable	(31,000)	(16,000)
Net cash provided by operating activities	116,000	185,000
Cash flows from investing activities:
Patent application costs	(13,000)	(6,000)
Purchase of property, plant & equipment	(38,000)	0
Net cash used in investing activities	(51,000)	(6,000)
Cash flows from financing activities:
Proceeds (payments) on debt financing	(38,000)	(75,000)
Proceeds from lines of credit	2,835,000	3,095,000
Payments on lines of credit	(2,880,000)	(3,179,000)
Net cash (used in) financing activities	(83,000)	(159,000)
Net (decrease in) / increase in cash and cash equivalents	(18,000)	20,000
Cash and cash equivalents - beginning of period	156,000	158,000
Cash and cash equivalents - end of period	138,000	178,000
Supplemental disclosures of cash flow information
Cash paid during period for interest	71,000	79,000
Cash paid during period for taxes	1,000	1,000
Consulting expense prepaid with restricted stock	50,000	49,000
Debt issuance cost paid with restricted stock	$ 0	$ 96,000