KTT3 expanding broadcast telephone multifunction

KTT3 multifunction expanding broadcast telephone manufacturers supply mine handsfree KTT3 multifunction telephone for mine expansion broadcast intrinsically safe expansion of multicast communication, and sound and light alarm signal contact for coal mine gas and coal dust explosion hazards, but also for coal, metallurgy, chemicals, building materials, transportation, electricity, food and other industries ground harsh environments. The phone can be customized to expand communications and RBI broadcast signal contact system can also be incorporated into the device via the interface program scheduling switched communication systems. Accept an external control signal can be audible and visual alarm signal for the device start notice or warning. 2 Using environment: temperature: 0 ~ + 40 ℃ Relative humidity: ≤95% (+ 25 ℃) 3 Features: 3.1 phone with a four-core cable Unicom (including charging), to form an independent half-duplex line expansion broadcast communications, alarm systems and RBI signal contact; 3.2 interface can be incorporated into the program scheduling via switched communication systems, and can be set to a phone number that call; 3.3 any one phone to accept an external control signal, with each station on the telephone line may audible alarm signal can be used to start notice or other alarm control system; 3.4 built-in floating batteries, external power supply temporarily interrupted, the communication will not be affected; 3.5 Float battery pack built-recoverable safety devices, used as a short-circuit protection and to ensure that the safety performance; 3.6 has a low voltage monitor, make sure the communication system is working properly; 3.7 sturdy steel enclosure, excellent protection performance; a high degree of protection 3.8 connection cable connector for easy on-site installation wiring. 4 Main Specifications: 4.1 system capacity and communication distance: 25, 5Km, telephone uniform distribution (mine 1 × 2 × 7 / 0.43 + 1 × 2 × 7 / 0.30 signal cables PUYVR) 4.2 External Charging: DC15V ~ 27V mine with intrinsically safe power supply (KDW9A, KDW15, ZBK ore intrinsically safe power supply) 4.3 Internal power supply: 6GNY0.6Ah nickel-cadmium battery pack (built-recoverable safety devices, Rmin = 0.25Ω, Rmax = 0.40Ω, Imax = 0.75 A) 4.4 alarm: Alternating tone signal, low frequency 750Hz ± 100Hz, high-frequency 1000Hz ± 100Hz, alternating time 0.5 ~ 1S (alarm control inputs must be connected to intrinsically safe circuits) 4.5 RBI signals: tone signals 750Hz ± 100Hz 4.6 RBI alarm sounds: not less than 90dB 4.7 alarm control signal: DC current (2 ~ 10mA) or potential-free contacts 4.8 Dimensions (length × width × height): 360mm × 165mm × 200mm 4.9 Weight: 10.5Kg 4.10 Enclosure protection class: IP65 4.11 Explosion-proof type: Mine intrinsically safe Exib I 4.12 and outlet allow cable diameter: 6 ~ 12mm 4.13 connector allows cable diameter: 7 ~ 8.5mm Name: Manager Liu Mobile 15562337281 QQ; 2964406456 Want: meikuang008 Address: Jining high-tech area