Business Segments (Tables)

3 Months Ended

Jul. 31, 2020

Segment Reporting [Abstract]

Schedule of Financial Information Relating to Industry Segments

The following is financial information relating to industry segments:

	July 31,
	2020		2019
Net revenue:
Security alarm products	$	3,114,000	$	2,830,000
Cable & wiring tools		800,000		536,000
Other products		133,000		186,000
Total net revenue	$	4,047,000	$	3,552,000
Income from operations:
Security alarm products	$	912,000	$	725,000
Cable & wiring tools		235,000		137,000
Other products		39,000		48,000
Total income from operations	$	1,186,000	$	910,000
Depreciation and amortization:
Security alarm products	$	22,000	$	23,000
Cable & wiring tools		31,000		31,000
Other products		12,000		20,000
Corporate general		21,000		15,000
Total depreciation and amortization	$	86,000	$	89,000
Capital expenditures:
Security alarm products	$	93,000	$	169,000
Cable & wiring tools		—		—
Other products		2,000		—
Corporate general		—		—
Total capital expenditures	$	95,000	$	169,000

	July 31, 2020		April 30, 2020
Identifiable assets:
Security alarm products	$	7,391,000	$	7,150,000
Cable & wiring tools		3,152,000		2,684,000
Other products		440,000		724,000
Corporate general		36,366,000		33,204,000
Total assets	$	47,349,000	$	43,762,000