If there is no sound when using the intercom, or the sound is very small, you should first check whether the battery voltage is sufficient. If the battery is normal, check the receiving frequency of the receiver and other intercom. Essence If there is no problem with the above inspections, then it m......
Read MoreIn the case of ensuring that the battery is electric and the battery contact is normal, if the intercom cannot be turned on, the first thing to do is to check whether the insurance tube (F500) is burned out due to the large current. If the insurance tube is normal, the intercom cannot be turned on, ......
Read MoreMost walkie -talkies have fault self -test function. When the alarm of a beep is issued when the power is turned on, it shows that the intercom was found to find problems when the self -inspection was turned on. The problems that can be found in the intercom self -inspection include: 1. There is an......
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