- microphonic surveillance
- микрофонное наблюдение
Англо-русский юридический словарь. Академик.ру. 2011.
microphonic surveillance
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Burglar alarm — Silent alarm redirects here. For the album, see Silent Alarm (album). Burglar (or intrusion), fire and safety alarms are all electronic today. Sensors are connected to a control unit via a low voltage hardwire or narrowband RF signal which is… … Wikipedia
