Progress Direct Systems Volt Tattler 2 Owner's Manual page 32

your specifications. Note the behavior of the LEDs. If it does not function properly simply go
back to step 1 and adjust the offending calibrations.
If you hear Morse question marks (..--.. ..--.. ..--..) or the thresholds do not seem right, simply begin the
calibration again. If calibration does not seem to fix the problem you may need to replace the
microcontroller. Contact the vendor for parts.