DH9361 Utility Tunnel Fiber Optic Telephone Master/Slave Unit / Fiber Optic Fire Telephone Host / Networked Fire Telephone Host / Smart Connected Fire Telephone Host

DH9361 Utility Tunnel Fiber Optic Telephone Main Unit/Sub Unit, Fiber Optic Fire Telephone Main Unit, Networked Fire Telephone Main Unit, Smart Fire Telephone Main Unit

I. Overview:

1) Application Scope: Used for communication between the control room and the field during emergencies, firefighting command, evacuation, rescue, and other special applications; suitable for urban utility tunnels, subways, tunnels, ports, and other scenarios requiring long-distance communication.

2) This device can be used independently or networked with devices of the same model via our company's KT9301 series optical transceivers to enable calling/conversation functions between the main control room and regional control rooms or various extension units.

a. System networking equipment includes: DH9361 fire telephone main unit, KT9301 series audio data optical transceivers, DH9272 series fire telephone extensions, DH9273(A) series fire telephone jacks, and other components;

Optional components include: DH9277 bus surge protector, DH9279 bus isolator, KT9302 information editing adapter, etc.

b. When used in a networked system, the telephone main unit can be set via menu as "system main unit" or "regional main unit";

c. In a networked system, it can include up to 17 fire telephone main units and 1683 telephone extension components;

d. The regional main unit can be set via menu to "no transfer," "auto transfer," or "delayed transfer." When an extension in this region calls in and the unit is not answered in time, it can be transferred to the system main unit according to the preset method;

e. When used in a networked system, the fiber optic transmission distance can reach over 25km (single-mode single-fiber);

3) This device adopts our company's two-wire bus technology, enabling power supply, communication, and voice signals to be transmitted in parallel over two wires. Polarity does not need to be considered during wiring, facilitating installation and debugging.

4) This device can mutually call and conduct full-duplex conversations with extensions within its region. The main unit can communicate with up to 5 extensions simultaneously; when used as the "system main unit," it can mutually call and conduct full-duplex conversations with regional main units or extensions, and can communicate with up to 5 main units or extensions.

5) This device features extension location remark information functionality, which can be input via keyboard or written via computer using a dedicated tool (KT9302 information editing adapter).

6) This device has comprehensive detection measures, enabling real-time monitoring of bus status and extension status. It can issue audible and visual alarms when line open or short-circuit faults occur or when an extension goes "offline." It automatically recovers after troubleshooting.

7) This device adopts full digital control, with each functional unit centrally controlled by ARM, combined with hardware and software technologies, making it adaptable to various complex environments. It uses silicone key controls for a comfortable feel.

8) This device can record and display call and response times, and can query and display no less than 1000 time records; the system main unit can query time records saved by regional main units via menu operation.

9) This device uses digital recording technology, which is reliable and long-lasting, with automatic call recording; single-device recording time is no less than 120 minutes.

10) This device has a self-test function, enabling detection of display and audio components.

11) Compliance Standards: "Fire Alarm Control System GB 16806-2006" and its first amendment.

II. Main Technical Specifications:

1) Power Supply: DC24V±10%, Current: ≤1A

2) Voice Frequency Response: 300～3400Hz（±3dB）

3) Transmission Loss: ≤5dB

4) Line Conditions: Extension terminal voltage not less than 18V

Cable: Shielded cable or twisted pair should be used, with a cross-section of at least 1.5 mm². If wiring length exceeds 1 km, the cross-section should be appropriately increased; if using shielded cable, the shield layer should be grounded at one end.

Inter-line insulation resistance ≥ 20kΩ, Inter-line capacitance ≤0.7μF

5) Bus Length: ≤1200 meters

6) Recording Time: Greater than 120 minutes

7) Clock Error: ﹤6s/day

8) Operating Environment: Temperature 0～40℃, Relative humidity less than 95%.

All products have complete fire safety certifications. Welcome to inquire by phone. www.szhsj119.com

Shenzhen Hongsheng High-Tech Electronics Co., Ltd.

Contact: Chen Cheng (Mr.)

Tel: 【15889370119】(Same as WeChat number)