Explosion proof electrical equipment is widely used in coal, petroleum, chemical, pharmaceutical, textile, machinery manufacturing and other industries where explosive gas, steam, combustible dust or fiber and other dangerous substances may appear or gather. According to the survey, 60% – 80% of the explosion and fire accidents are caused by improper installation and use of… Continue reading Installation error of explosion proof electrical equipment (1)
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1. Function description 1) Wall mounted installation, beautiful appearance, magnetic door cover design; 2) SMC forged shell, strong corrosion resistance, waterproof and dustproof grade up to IP66; 3) It supports sip2.0 protocol and can register two SIP accounts; 4) Support free dialing or off hook automatic dialing; 5) Support automatic connection of incoming calls and… Continue reading Function, operation and main technical parameters of emergency telephone
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First, the choice of telephone should be suitable for the layout of the family, some of the decoration is simple, or the furniture in the home is solid wood furniture, so when you choose the telephone, you can choose the palace style telephone, or the solid wood handle telephone, which is more suitable for family… Continue reading How to choose a telephone?
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The analog voice gateway mainly coordinates the IP broadcast telephone in the pipe rack with the extension telephone of the program-controlled exchange, including the relay function for the incoming and outgoing calls of the external local telephone, so as to ensure the integration of different communication modes to form the same call network and access… Continue reading Analog hybrid voice gateway.
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1. Product function 1)Dispatching operation: call, no call, forced insertion, forced disassembly, proxy connection, monitoring, multicast, broadcasting, conference, night service, IP linkage telephone 2)Monitoring function: user status can be indicated by icon color and text: call, ring, call; 3)Call and call: dial up call, call answering, multi line switching; 4)Management functions: system management, group management,… Continue reading 1. Scheme introduction of IP telephone emergency broadcast system in tunnel pipe gallery.
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I. Extension structure The height of the microphone and receiver from the ground is 145±10cm. Emergency telephone has weather-proof facilities. Tunnel emergency telephone extension adopts metal box with steel plate thickness of more than 1.5mm, and adopts hot zinc spraying technology for antirust treatment, with zinc spraying thickness of 0.04 ~ 0.06 mm. After putty… Continue reading Tunnel emergency telephone extension structure, extension working environment
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Expand the broadcast function to control the broadcast of the tunnel without adding optical fiber (share an optical fiber with emergency phone), including single call, slice call, full call and volume adjustment functions. At least two sound sources can be played simultaneously. Can be displayed in linkage with the monitoring screen of the monitoring sub-center… Continue reading Functions of Satellite Road Tunnel Emergency Telephone Broadcasting System
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Emergency phone users can directly communicate with the operator of the emergency phone console, and push-to-talk (easy to operate). After the user presses the extension button, the sub-unit can automatically send a call to the console host of the monitoring center, and transmit basic information such as the local kilometer mark, up-down direction, etc. Each… Continue reading Main Functions of Roadside Extension/Tunnel Extension
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16. The on-screen map displays the map sketch according to the scale, and the important sections should have local enlargement function. 17. Emergency telephone collision, damage, open the door, etc., the center can immediately display sound and light alarm signal. When a traffic accident user’s extension calls for an alarm and when the extension is… Continue reading Technical Indicators of Emergency Telephone Console (2)
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