[ [ Alarm devices, namely, burglar alarms; electric alarm bells; electric burglar alarm installations; anti-theft warning apparatus, not for vehicles; alarm installations in the nature of call bells; notification apparatus, namely, visual and audible notification devices for warning purposes; electric door openers; sensors for determining position; ] drilling gauges, namely, gauges for measuring the size and depth of holes; [ electrical cable ducts; apparatus and instruments for the transmiss...