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Information × Registration Number 2117U002404, Article popup.category Thesis Title popup.author popup.publication 01-01-2017 popup.source_user Сумський державний університет popup.source http://essuir.sumdu.edu.ua/handle/123456789/65499 popup.publisher Sumy State University Description The opportunities provided by mobile operators are increasingly used in surveillance systems. To date wireless security systems on the basis of GSM is widespread due to their relatively low cost and ease of installation and operation. The use of GSM obviates the need to expand its network of repeaters – repeaters are used by GSM operators. As a result, it is possible to protect objects wherever confidently works GSM network operator. popup.nrat_date 2025-05-12 Close