High Voltage Tattling - Progress Direct Systems Volt Tattler 2 Owner's Manual

High Voltage Tattling

Next use both 9 volt batteries together in series to create 18 volts.
In this connection, at power up, a new Volt Tattler 2 should announce the Morse 'R'(.-.) then repeat
Morse 'H' (....). The Green and Red LEDs should also be flashing.