1) 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.
2) It has perfect detection measures, which can detect the short circuit and open circuit of the bus, and make sound and light alarm.
3) The anti-interference performance of hardware and software allows for the adaptability to various complex environments.
4) The voice is subject to differential transmission on the bus, with strong anti-interference capability.
5) The application of silica gel button presents a beautiful appearance, good hand feeling and long service life.
6) 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.
7) 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.
8) The recording is subject to circular coverage, first-in-first-out mode and automatic recording is enabled during a call.
|Power supply||Mains power: AC 220V (+10%, -15%, 50Hz)|
Standby power supply: External DC24V
|Recording duration||more than 20min|
|Length of bus||≤1,500m|
|Working environment||Temperature 0~+40ºC, RH ≤95%|
|Bus capacity||up to 99 code addresses (set by code switch in binary mode)|
|The host supports communication with at most 3 extensions simultaneously|
|Support up to query and playing 99 segments of recording|
|At most 120 call messages can be recorded|
|Line condition||extension loop resistance (exclusive of phone resistance) ≤ 300 Ω|