Industry: 3669—Communications Equipment, Not Elsewhere Classified
Establishments primarily engaged in manufacturing communications and related equipment, not elsewhere classified. Important products of this industry are intercommunication equipment, traffic signaling equipment, and fire and burglar alarm apparatus.

Burglar alarm apparatus, electricRailroad signaling devices, electric
Fire alarm apparatus, electricSignaling apparatus, electric
Fire detection systems, electricSignals: railway, highway, and traffic—electric
Highway signals, electricSirens, electric: vehicle, marine, industrial, and air raid
Intercommunications equipment, electronicSmoke detectors
Marine horns, electricTraffic signals, electric
Pedestrian traffic control equipment
Codes Titles Total Marketable US Businesses
3669Communications Equipment, Nec1,283
366900Communications equipment, nec191
36690000Communications equipment, nec191
366901Emergency alarms483
36690100Emergency alarms202
36690101Burglar alarm apparatus, electric77
36690102Fire alarm apparatus, electric56
36690103Fire detection systems, electric34
36690104Metal detectors54
36690105Sirens, electric: vehicle, marine, industrial, and air raid26
36690106Smoke detectors34
366902Transportation signaling devices305
36690200Transportation signaling devices66
36690201Highway signals, electric7
36690202Marine horns, electric4
36690203Pedestrian traffic control equipment62
36690204Railroad signaling devices, electric34
36690205Signaling apparatus, electric35
36690206Traffic signals, electric97
366999Communications equipment, nec, nec304
36699901Intercommunication systems, electric216
36699902Visual communication systems88