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Desktop telephone

Desktop telephone

Product model:KNZD-28
material:Cold-roll steel sheets

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Desktop telephone KNZD-28
We are the manufacturer of  Very easily operated Outdoor phone help point emergency calling telephone for hospital or other public place.The emergency call telephone will be designed to work on railway, metro, tunnel, etc. Housed in robust aluminium box with one CALL/ ANSWER button, it will offer protection against the outdoor environment and vandals.The unit will meet all the latest European/UK standards telephony, waterproofing IP65, and lightening protection together with offering the level of performance and reliability demanded in such an environment.

+DTMF(Dual Tone Multi Frequency)
+Matching with most PABX,PBX and PAX systems.
+Hotline call, As soon as you pick up handset the phone will put through.
         + Robust Metal body very strong.
         +With or without keypad. Auto dial,
         +LED indicator to inform you there is a coming call
         +Robust and weather resistant, Wearable and moisture proof IP65
         +Dual purpose design for wall or desk mounting, simple installation
         +Industry standard robust handset with stainless armoured cord
         +Well treated metal hook switch.
         +Matching with most PABX, PBX and PAX systems. Standard RJ11 Connector


 1.It is suitable for automatic instrution amplification telephone system when feed voltage reaches to 33-60v.
2.Environmental temperature:-30℃-60℃.
3.Relative humidity:10%-95%.
4.Atmospheric pressure:86-106kpa.
5.Environmental noise:<=80db
6.Double audio dialing.
7.Standard frequency:697,770,852,941Hz.
8.Low frequency group:697,770,852,941Hz.
9.High frequency group:1209,1336,1477Hz.
10.Frquency offset:≤±1.5%.
11.The signal level when the lenght of user's line is 3 km.
12.Standard frequency:Low frequency group:-9db.
13.Hight frenquency group:-7db±3db.
14.Level difference frequency high and low frequency of combined signal:2±1db.
15.The total intermodulation distortion caused by harmonic is 20db lower than wave level.
16.Call transmission index:(5KM)SLR≤12,RLR≤-1,and STML≥10,Input impedance:600Ω.



EMC : EN50121 (Railway application-
           Electromagnetic Compatibility)
           EN55022: emissions
           EN55024: immunity
Ingress Protection: GB4208-93 IP67
ITU-T Recommendations K21
Packing details:

Telephone unit size: 230 x 150 x70 mm
1pcs in each inner CTN box,
size: 43.3 x 27.6 x 19.1   G.W: 4.5kg
4pcs in outer CTN box, size: 56.6 x 44.5 x42  G.W: 20.25kg
20GP: 2000PCS,  40GP: 4000PCS,  40HQ: 5200PCS