It took some practice with the repeater to get it to work with dtmf tones. You have to get the receive volume just right about 3/4. The instructions are wrong to get the mailbox to work. It's the tone 1st then say message. It works fine as a parrot repeater too. I always keep it on the charger that seems to work better when using dtmf tones. I plan on using it as an emergency repeater only.
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