| 摘要 |
An integrated system which provides an extension of the effective operational area of a single unit ultrasonic pest repeller is disclosed. A master unit produces selectable acoustic waveforms from a speaker and also produces selectable electronic output signals for delivery to a first satellite unit. The first satellite unit produces a similar acoustic repelling waveform and also replicates the master unit electronic output signal for delivery to an identical second satellite unit. Each subsequent satellite unit in a serial chain of satellite units is powered by its own wall plug-in transformer so that the chain may be as long as necessary to accomplish deterrence of roaches, insects including bees, and rodents from the entire area to be protected.
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