# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Telephone Line Monitor | 电话线路监视器

A sensor that monitors one or more conditions of a telephone circuit to detect when if it has become incapable of reporting alarm-detected problems to the monitoring facility or to an end user.

监视电话线路内一个或多个状况的传感器，用于检测电话线是否能向监视设施或终端用户报告检测到的报警问题。


Letter Selection	Email Enquiry
选择词条	邮件咨询