Emergency Telephone System Control Panel
DH99E
Product features
With the two-bus technology, the power supply and communication are compatible on two buses, and are not divided into the positive and the negative, convenient for debugging.
It has perfect detection measures, which can detect the short circuit and open circuit of the bus, and make sound and light alarm.
The anti-interference performance of hardware and software allows for the adaptability to various complex environments.
The voice is subject to differential transmission on the bus, with strong anti-interference capability.
The application of silica gel button presents a beautiful appearance, good hand feeling and long service life.
The host and extension can call each other and make full-duplex call, and the host can communicate with three extension telephones at the same time.
It has the function of recording and displaying the calling and answering time, and can query 120 records of calling and response time between the host and the extension.
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