Telecommunication transmitters; distance measuring apparatus; alarm bells, electric, namely, Burglar alarms, Gas alarms, Anti-intrusion alarms; electric control panels; anti-theft warning apparatus in the nature of theft alarms, not for vehicles; fire hose; electric installations for the remote control of industrial operations, namely, fire protection sprinkler systems; switches, electric; megaphones; heat regulating apparatus, namely, thermostats; amplifiers; fire blankets; sirens; electric ...