If the Ultrasonics stops working, is it electronic problem or the transmitter problem?

Do you have a multimeter? If you do, you can check the ultrasonic port voltage. You should measure approximately 25 to 30 volts AC when the ultrasonic switch is up in the "SLOW" position and the "JW - Spooky2 Central Overnight Sweep Low Frequency" Preset is run.

Please see the detailed instructions at:

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