voip analog hotel telephone for industrial coal mine

                                                     NINGBO JOIWO EXPLOSIONPROOF TECHNOLOGY CO.LT D       voip analog hotel Telephone for industrial coal mine     1. Range:   Can be used in the explosive, gas dangerous places,suitable for the industry of oil,chemical industry,
oil refining, wharf, fire, power plant, steel etc.   2.Features:   1.The communication system can be independent and composed with telephone,program-controlled switches and coupler.
2.Can be directly connected to a telecommunications network
3.Telephone amplifying sounds's volume can be adjusted according to their environment.
4.The telephone circuit uses the universal double integrated circuit, with the advantage of  hair Accuration, clear
communication and stable work.
5.The degree of protection IP65 can apply to damp, dust and corrosion and other harsh environment.
6.The shell of telephone's design is patent, waterproof, dustproof, without waterproof cover, beautiful and practical.
7.Shell is made of silicon aluminum alloy die casting and the surface temperature of antistatic spray,applicable
to a variety of harsh environment, high mechanical strength, strong shock resistance.
8.Using our patent stainless steel keyboards, contact resistance≤30 ohm, service life ≥2 million,
push force 160-200 grams,good hand feeling.
9.The handle uses imported PC explosionproof plastic material, thermostability of the PTFE wire.
The military antinoise transmitter, clear conversation in the 115dB environment.
10.Hook adopts magnetic induction swith,life cycle ≥ 500 thousand   3.method of application   Same usage as ordinary telephone, can only call and answer .   4.Technical parameter  

Explosion-proof mark	Exd[ib]ib II BT6 DIP A20 TA,T6
Defend grade	IP65
Working voltage	AC220V 50Hz
Wait\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
effective distance of the call	5Km
Size	343*29 4*206mm
Outlet thread	G-3/4"
Installation	wall-mounted
Weight	12kg

          we specialize in this field for several years, with  the strengh of    ATM keypads, telephone keypads,handsets,hook and other accessories for phones.       If you have any  questions, please feel free to contact us !  

Contact us if you need more details on VOIP Telephone. We are ready to answer your questions on packaging, logistics, certification or any other aspects about voip hotel telephone、voip analog telephone adapter. If these products fail to match your need, please contact us and we would like to provide relevant information.

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