Note 2 - Summary of Significant Accounting Policies - Summary of Inventory (Details) - USD ($)	Sep. 30, 2025	Sep. 30, 2024
Monitoring equipment component boards inventory	$ 534,999	$ 665,329
Reserve for damaged or obsolete inventory	(61,535)	(82,848)
Total inventory, net of reserves	$ 473,464	$ 582,481

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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