External Coin Meter/Central Payment (2K) - Electrolux TD6-14 Installation Manual

Installation manual
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7.6.3

External coin meter/Central payment (2K)

The signal received from external coin meters must be a pulse between 300–3000 ms (500 ms is recommended)
with a minimum pause of 300 ms (500 ms is recommended) between two pulses.
fig.7438