When you press LOCK on a station, another station cannot call or talk to that station until you press TALK to release the lock. (Pressing CALL or turning off the station also releases the lock).
USING ADDITIONAL STATIONS
You can add additional stations, such as RadioShack Cat. No.
Be sure the letter on the stations you plan to add match- es the letter on your current stations. If you want to set up a separate intercom system, however, be sure it operates on a different frequency.
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