Sell SOS telephone KNZD-09A

Main Features:

 

Matching with most PABX, PBX and PAX systems.

 

1.  Matel body with SUS keypad, solid and temperature bearable

2.  Handset free, loudspeaker, keypad with memory for speed dial

3.  Resume lightning proof protection automatically standard to ITU-T K*1

4.  Waterproof grade is IP*5(can improve to IP*7)

5.  The metal shell is provided with grounding connection device and is absolutely insulated with inner circuit and electric , then has the effect of electromagnetism shield.

6.  Support hotline call, can realize ring off automatically if the other side close.

7.  Totally adopt SMTC craftwork keep very good quality.

8.  The design is super thin and smart. Embed style and hanging style can be chosen. 

9.  Every call is limited(set by five minutes), auto ring off if time exceeded. (Optional)

*0.The telephone has passed the certificate of ISO***0(***0)

Applications:

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<*2, RLR<*1, STMR>*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)