Progress Direct Systems Volt Tattler 2 Owner's Manual page 21

Returning the voltage in between about 10 and about 15 volts should silence the alarm. The Yellow LED
will continue to flash indicating that there was a voltage drop below the low threshold. A short press on
the Programming Button will reset the Volt Tattler 2. Once reset only the Green LED should then be
flashing. IMPORTANT: These thresholds (10V and 15V) are only valid on a Volt Tattler 2 that has not
been reprogrammed. If the unit has been reprogrammed then the thresholds will act according to their
newly calibrated values.