explosion proof loudspeaker telephone

intrinsic safety telephone, with explosion-proof and safety certificate,best quality ,suitable to coal mine underground One, product characteristicsIn 1, HCBK-4 explosion-proof amplifying communication system using ZL102 aluminum alloy die-casting molding, with high-pressure electrostatic plastic-sprayed surface.Phone panel is provided with 4 x 4 display enhanced keyboard, intrinsically safe type liquid crystal state display window, the magnetic induction of high reliable on-hook switch, mobile phone, air sealing plug lead cable.2, super networking capability: the system provides up to 128 word set net, and the distribution of 2 yards, 3 yards and 4 yards of the single number.The system also provides up to 32 automatic channel selection, can provide 32 pairs of users at the same time.Is the rope way most models.3, strong independence: each machine is independent of the workstation, a telephone fault, does not affect the whole system work.For every one of all the wind provided with automatic gain control, voice size does not vary with distance and phone number change.4, super call function: all calls, group calls, single calling, demolitions of plug, session, realize the hierarchical scheduling.5, strong extended function: system integration conversion module circuit, can be directly with the factory office switch network, also can be connected to the telephone network and the fire alarm host, once the fire, the system automatically activated fire broadcasting program; also can be connected to a computer (KDC-4 installed automatic broadcast software timing automatic broadcasting).Two, applicable to the environment1, the environment temperature: -30 °C ~+50 °C2, the relative humidity: ≤ 95% (room temperature)3, the atmospheric pressure: 80-110KpaThree, technical parameters1, executive standard: GB3836.1-2000, GB3836.2-2000, GB3836.4-2000 is equivalent to IEC60079-0, IEC60079-2, IEC60079-11, EN50014, EN50018, EN50020/392: Exdib II BT6, explosion proof mark is equivalent to the II 2G Exdib II BT6 (European standard)In 3, working voltage: AC220V, AC110V (50Hz-60Hz)In 4, the static current: 50mA5: 1K Ω, the loop impedance6, line output audio signal level: 1.5V/20 Ω7, distortion: ≤ 0.2%In 8, PA output power: 0-35W (adjustable)In 9, the channel number: 3210, maximum network number: 12811, installation: wall typeNote: when used outdoors, with stainless steel waterproof and dustproof box.Four, installation diagram 

explosion proof loudspeaker telephone