Public address system · Fire emergency telephone
DH99EEmergency Telephone System Control Panel
Key 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.
Price on request
The fire telephone system is the special communication equipment for fire fighting, pursuant to the national standard GB16806-2006 Fire Linkage Control System. this system is composed of the fire telephone host (hereinafter referred to as host), fire telephone extension (hereinafter referred to as extension) and fire telephone jack (hereinafter referred to as the jack), and is suitable for communication and dispatching in a fire or emergency in the building.
Technical Parameters:
| Power supply | Mains power: AC 220V (+10%, -15%, 50Hz)Standby power supply: External DC24V |
| Bus current | ≤600mA |
| Frequency range | 300～3400Hz |
| Transmission attenuation | ≤5dB |
| Recording duration | more than 20min |
| Length of bus | ≤1,500m |
| Weight | ≤10kg |
| Dimensions | 406×331×174（mm） |
| Working environment | Temperature 0～+40℃, RH ≤95% |
| Bus capacity | up to 99 code addresses (set by code switch in binary mode) |
| Line condition | extension loop resistance (exclusive of phone resistance) ≤ 300 Ω |
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