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Volt Tattler 2 Board Details
The Volt Tattler 2 board is depicted below.
Power Input
Although Volt Tattler 2 is protected against reverse polarity connection, it is not impossible to destroy
the unit. Note that the minus connection is nearest the corner of the board.
Status Lights
If Volt Tattler is connected and watching its supply voltage it will first announce that it is running with an
audible Roger signal (Morse 'R' .-.). Then immediately the Green L.E.D. will flash periodically to indicate
that it is taking readings and watching them. In normal operation (voltage is not too high or too low) the
Volt Tattler operates silently. The Green L.E.D. indicates that it is operating.
The yellow LED applies if Volt Tattler 2 supply voltage drops to or below the low threshold. Once a low
voltage transgression has occurred, the yellow LED will continue to flash even if the voltage returns back
above the low threshold. This indicates a low voltage condition has been detected since power on or
the last board reset.
The red LED applies if Volt Tattler 2 supply voltage rises to or above the high threshold. The red LED will
continue to flash even if the voltage returns below the high threshold. This indicates a high voltage
condition has been detected since power on or the last board reset.
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