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据日本《JEI》杂志1986年33卷6期报道:由Nitsuko有限公司制造的安全电话101—TH对标准的电话机增设了监视板和自动通告以及任选的门电话勃能。101—TH安全电话可连接到传感器上,以便防止住室发生漏气、起火和其他的意外
According to Japan’s “JEI” magazine 1986 Vol. 33, No. 6 reported: made by Nitsuko Co., Ltd. Security Phone 101-TH to the standard phone with additional monitoring board and automatic notification and optional door phone. The 101-TH safety phone can be connected to the sensor to prevent leaks, fires and other accidents in the dwelling unit