PYLON

radon gas detectors and monitors; radon and thoron working level monitors; radiation detectors; electrical power supplies for telephones; power supplies, namely, DC converters, AC power converters, battery chargers, inverters, ringing generators, uninterruptible power supplies (UPS), key and private branch exchange (PBX) power supplies; cable assemblies; satellite communication equipment, namely, satellite and ground station monitors; sonar transducer impedance analyzers; multiplexors; water pollution detectors; and environmental monitors