When the 12 Vdc power supply to the CPU of the coin operated vending machine will start to work. When a coin will do the CPU compared to the value of the coin (Coin Comparator).-If the values match, it will accept coins, which drops down below and then send the signal to the Signal by Coin:1 baht to 1 pulse2 baht will get 2 pulse.5 baht to 5 pulse10 baht to pulse.-If the values do not match, it will return the coin machines came out the front of coin-operated equipment. Without the signals out to the Coin Signal
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