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radio teleswitch
A radio teleswitch is a device used in the United Kingdom to allow electricity suppliers to switch large numbers of electricity meters between different tariffs, by broadcasting an embedded signal in broadcast radio signals. Radio Teleswitches are also used to switch on/off consumer appliances to make use of cheaper baseload tariffs, such as economy 7.
== Operation ==
Each of the user companies (the ''RTS Users'', or ''Service Providers'') has its own database on the Central Teleswitch Control Unit (CTCU), which is an HP Integrity computer running OpenVMS on IA-64 for reliability and clustering technology to minimise downtime.
The database defines how each group of teleswitches belonging to the user-company will control the loads and meter registers connected to it. The CTCU uses the database and certain rules to generate and control a continuous string of messages, which is forwarded to the BBC for transmission.
Although each message will be received by all installed teleswitches, the unique user and group-codes carried by the message ensure that only teleswitches carrying the same combination of codes will act on it.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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