Business Segments (Tables)

3 Months Ended

Jul. 31, 2019

Segment Reporting [Abstract]

Schedule of Financial Information Relating to Industry Segments

The following is financial information relating to industry segments:

	July 31,
	2019		2018
Net revenue:
Security alarm products	$	2,830,000	$	2,150,000
Cable & wiring tools		536,000		679,000
Other products		186,000		600,000
Total net revenue	$	3,552,000	$	3,429,000
Income from operations:
Security alarm products	$	725,000	$	485,000
Cable & wiring tools		137,000		153,000
Other products		48,000		135,000
Total income from operations	$	910,000	$	773,000
Depreciation and amortization:
Security alarm products	$	23,000	$	10,000
Cable & wiring tools		31,000		31,000
Other products		20,000		27,000
Corporate general		15,000		15,000
Total depreciation and amortization	$	89,000	$	83,000
Capital expenditures:
Security alarm products	$	169,000	$	—
Cable & wiring tools		—		—
Other products		—		—
Corporate general		—		—
Total capital expenditures	$	169,000	$	—

	July 31, 2019		April 30, 2019
Identifiable assets:
Security alarm products	$	6,369,000	$	6,179,000
Cable & wiring tools		2,725,000		2,713,000
Other products		864,000		842,000
Corporate general		34,088,000		33,293,000
Total assets	$	44,046,000	$	43,027,000