"It is possible that someone may have an opener with the same frequency" Depending on how old the system.. Most older openers have 4 or 5 digit 4 roll frequency set where you slip the numbers from 1 to 5 making new combination to change the Frequency. Some thief's drive around with an opener till the have hit. Especially new systems cause you have go in and manually reset the factory setting, otherwise if I buy new one it maybe set on same Frequency?.
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