Shockproof Weatherproof Telephone , Industrial Auto Dial Telephones
Place of Origin
Guangdong, China (Mainland)
Lightening Protection Degree
Automatically dial with one button
Call time limited
Send address code of this machine, and code sending time can be
High waterproof, dustproof performance, full aluminum phone cover,
IP66 protection grade.
Sprayed with imported reflective lacquer on the surface, bright
color, 5-10 years not fading, completely conform to the standards
Phone size: 320*230*120(mm)
Outside box size:439*277*191(mm)
Packing materials: Pearl cotton cartons
It is applied to highway for emergency call, railway or subway for
interval telephone call, and tunnels, electric tunnels for
Ambient temperature:-30 ~ +60 degreeRelative humidity:10%~95%
Atmospheric pressure: 86~106Kpa Circumstance noise:less than
Sound level of ringing:over 70dB(A).
Standard frequency:low frequency group:697. 770. 852. 941Hz,
high frequency group:1209. 1336. 1477Hz, frequency deviation:-1.5%
If service line is a 3Km signal - level:
Standard frequency:low frequency group:-12dB~-6dB, high frequency
group:-10dB~-4dB, level difference between low and high frequency
of compound signal:0dB~3dB, the total distortion caused by
intermodulation of harmonic wave is lower than the basic level by
at least 20dB.
Call transmission index:(5KM)SLR<12,RLR<-1,STMR>10, output
impedance is 600 Ohm
Parameters is kept in EEPROM, no losing with power-fail.
the most professional manufacture in Asia
Cisco & Siemens ordered