Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2018	Mar. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,671,904	$ 1,693,532
Accounts receivable, net of allowance for doubtful accounts of $125,000	1,220,945	1,207,493
Inventories	380,330	201,023
Prepaid expenses and other current assets	41,794	12,156
Total current assets	3,314,973	3,114,204
Property and equipment, net of accumulated depreciation of $89,347 and $70,440, at September 30, 2018 and March 31, 2018, respectively	114,213	133,120
Inventories - long-term portion	111,051	111,051
Intangible assets, net of accumulated amortization of $11,337 and $10,639, at September 30, 2018 and March 31, 2018, respectively	9,597	10,295
Other assets	90,864	91,464
Deferred tax asset	1,124,000	1,092,000
Total other assets	1,449,725	1,437,930
Total assets	4,764,698	4,552,134
Current liabilities:
Capital lease payable	31,196	31,196
Line of credit	55,105
Accounts payable	245,770	286,964
Accrued expenses and other current liabilities	208,233	149,382
Customer deposits	133,573	122,167
Due to stockholder	134,016	130,551
Total current liabilities	807,893	720,260
Long-term liabilities
Capital lease payable, net of current portion	38,544	54,637
Total liabilities	846,437	774,897
Stockholders' equity:
Preferred stock, $.01 par value; 5,000,000 shares authorized, no shares issued and outstanding
Common stock, $0.0005 par value; 150,000,000 shares authorized, 67,588,492 shares issued and outstanding	33,794	33,794
Additional paid-in capital	33,294,069	33,294,069
Accumulated deficit	(29,409,602)	(29,550,626)
Total stockholders' equity	3,918,261	3,777,237
Total liabilities and stockholders' equity	$ 4,764,698	$ 4,552,134