Burglar alarm

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Burglar alarm
The Tenth Doctor and Roger Davey observing the latter's burglar alarm. (TV: Partners in Crime)

A burglar alarm was an alarm used to protect houses from burglars. (TV: Partners in Crime)

Vincent Parry had an intruder alarm in his house. When he heard a strange noise in his house, he threatened to turn it on, saying that the police would follow in three minutes. (AUDIO: Orr)

Roger Davey's burglar alarm went off at ten past one each morning, for no explained reason. He had his burglar alarm observed by experts, had a new one installed and even contacted Watchdog, for no results. His burglar alarm was actually triggered by the spawning of Adipose babies from Roger's body caused by his consumption of Adipose pills. (TV: Partners in Crime)