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, electric
- Fire alarm apparatus, electric
- Fire detection systems, electric
- Highway signals, electric
- Intercommunications equipment, electronic
- Marine horns, electric
- Pedestrian traffic control equipment
- Railroad signaling devices, electric
- Signaling apparatus, electric
- Signals: railway, highway, and traffic-electric
- Sirens, electric: vehicle, marine, industrial, and air raid
- Smoke detectors
- Traffic signals, electric