Public address communication system IP66 explosion proof telephone Range 1) Explosion-proof mark: Ex-de [ib] ib II BT6 DIP A20 TA, T6 [EX explosion-proof mark, DIP is dust proof mark, do both].2) Suitable for explosive gas atmospheres Zone 1 and Zone 23) Can be used in explosive gas atmosphere IIA IIB IIC* etc rough area 4) Can be used in flammable dust atmosphere 20 zone 21 zone 22zone etc rough area 5) Suitable for T1-T6 temperature classes.6) Can be used in petrol extraction,petroleum refining, chemical industry, military industry etc dangerous area. Meanwhile, it can be used in offshore platform, oil 5tanker and so on.7) Can be used in highly noise area above those environment especially. Feature 1) Shell of the explosion-proof telephone made of si-aluminum alloy with high temperature ,electrostatic plastic sprayed surface. good impact resistance. 2) The telephone adopt stainless steel keypad,which contact resistance≤30ohm,life cycle≥2 million,push force 160-200grams,defend grade is up to IP67, good hand feeling.3) Handle adopts imported Pc engineer material, thermostability of the PTFE wire .military noise Canceling microphone. Clear conversation in 115 dB environment .4) Hook adopts magnetic induction switch, life cycle ≥500 thousand Increased safety terminal compartment, to ensure that product's explosion-proof and electrical properties.5) Using integral design faith,integrate basic conversation circuit,noise removal circuit.power amplifying circuit and power circuital protection circuit etc. These electronic components of the product adopt famous imported brand and selected by high and low temperature aging test.6) The telephone network is flexible ,can be setted of its extension set arbitrarily, numbers can be changed random . it can add or decrease anytime without restriction. Each telephone is the independent workstation, will break down not to interfere with the overall system work.7) Can be set function of amplification call directly or after several ring ( 1 to 7 voice can be set ) , or more ring (it can be ring according to the offer of the exchange) 8) This system has function of general calling (hundreds response to a single call ). Technical parameter defend degree IP 66 EX mark Ex-de[ib]ib II BT6 DIP A20 TA,T6 output voltage AC220V 50Hz working current ≤0.2A Frequency response 250~3000 Hz ambient temperature -40~+60°C atmospheric pressure 80~110KPa relative humidity ≤95% amplify output power 10~25W continuosly adjustable size 343X294X206mm weight 12Kg installation wall-mounted Details First, the phone casing1) Alloy shell, 800 tons die casting machine casting, the wall thickness of 6mm, weighs about 8KG, high mechanical strength and impact resistance.2) Shell surface temperature electrostatic spray, antistatic ability is good. Eye-catching colors,10 years without fading.3) Phone casing patented design requires no separate waterproof cover, beautiful and practical, Patent No.: 1,581,443.4) Shell explosion Waterproof grade: IP65, waterproof and corrosion-proof.Second, key components5) Telephone internal circuit by the Division I independent research and development, the use of internationally-sided integrated circuit, with hair the exact number, call clear, stable and so on.6) Key components handle, hanging fork, keyboard by the company's own production, strict quality control, sale and fast response.7) Product keyboard for the Division I patented design, the panel of stainless steel, zinc alloy keys, the contact resistance ≤ 30 ohms, life ≥ 200 million times, pushing the intensity 160-200 grams. Patent No.: 1,754,789.8) Professional waterproof handle, imported PC-proof plastic, Teflon wire, using industrial-grade anti-noise microphone, call clarity in 115dB environment. This handle through international CE certification. CE Certificate Number: PS2010120310-2.9) Products made of zinc alloy fork hanging magnetic sensor switch, life ≥ 50 million times. How to use 1) The caller pick up the telephone handset, dial the phone number of the called and then the telephone will ring.2) But if no one answers the phone after it rings 6 times (1-7 times adjustable), the called people's telephone will automatically switches to the speaker PA, if so, the caller can shout to the called through the public address.3) When the called hear the shout and picks up the handset, they can chang to normal communication and the speaker will turn off automatically.4) If no one answers the telephone in one minute, the call will be automatically disconnected.5) The telephone can work with a public speaker 6) The explosion proof telephone is generally matched with anti-explosion junction box, anti-explosion public-address, anti-explosion amplifier and indoor telephone, all of which we manufactured by ourselves and forming a program dispatch anti-explosion public-address communication systems.and the connection schematic diagram is as follows:The systemic function feature 1,The system must be controlled with the digital program schedule dispatch aircraft and supporting the use of digital programme.2, All the extension in the systems are available to communication outside through the system exchanger.3, Two-tone dialing system through the keyboard.4, Automatic channel conversation. 5, System host of external; lines can be bound, outbound limit 6, Single call function.7, If the phone is not dialed in 5 seconds, you must pick up the handset dialing again, broadcast to find someone more than 60 seconds, you will hear a busy tone, and you must start again.8, Display.9, One key single call.10, One key group call.11, telephone dispatch conferencing capabilities.12, One key override and demolitions.13, The system would have to transfer, call waiting, call hold , hanging reminders, call out and other functions. We have specialized in industrial telephone used for harsh and hazardous environment, like explosionproof telephone, waterproof telephone, jail telephone etc. If you have any inquiry, please feel free to contact us. Thank you!