Sos Telephone IP Phone KNZD-11 Koontech

As Public telephone for indoor or outdoor, elevator phone, Taxi or bus stands or station, Highway call box. Railway, metro, ATM machines side,  Tunnel, Port, Dock, Mines, Generation facilities….

A good ideal telephone for use in wet or corrosive atmospheres

 

Specification:

Main technical indexes: 
1. Applicable for various types of SPC exchange and dispatching exchange system with feeding voltage of ****0V.
2. Ambient temperature: **0 ~ **0 degreeRelative humidity: *0%~*5%Atmospheric pressure: *6~**6Kpa Circumstance noise: less than *0dB(A)
3. Sound level of ringing: over *0dB(A).
4. Standard frequency: low frequency group: **7. **0. **2. **1Hz,
high frequency group: ***9, ***6, ***7Hz, frequency deviation: *1.5%~*1.5%
If service line is a 3Km signal-level: 
Standard frequency: low frequency group: **2dB~*6dB, high frequency group: **0dB~*4dB, level difference between low and high frequency of compound signal: 1dB~3dB, the total distortion caused by intermodulation of harmonic wave is lower than the basic level by at least *0dB.
5. Call transmission index: (5KM)SLR*0, output impedance is **0 Ohm.
6. Super strong function is available for dialing *2 groups of numbers stored in the memory (maximum length of each number is*6 digits)