special phone intercom Metro station building wall mounted IP emergency phone speed dial Auto dial phone KNZD-09 elevator phone

Handfree intercom Metro station building wall mounted IP emergency phone speed dial Auto dial phone KNZD**9 elevator phone

Product Application

The telephone is compatible with most of simulative or digit telephone distance control exchanger. Mainly used as handset free sound telecommunication in hazardous work environment.

What's the Emergency Telephone selling points?

1. Analogue / IP/VIOP optional

2. Metal body. Mechanical hookswitch.

3. Autodial when phone is picked up.

4. The speed-dial number can be optionally set or changed by keypad and its very easily operated.

5. Tally with the full function of the common telephone 

6. Wearable, waterproof, moisture proof, Vandal resistant and tamper-resistant hardware

7. Lightening protection to ITU-T K.*1

8. Handset integrity wiring to enable the telephone system to check if the telephone unit is still operational.

9. Selectable 7 minute time out

*0. Stainless steel keypad withstands high loads.

*1. The stainless steel armoured handset cord is manufactured to withstand high tensile forces.

KNZD**9 wireless waiter call system Auto Dial elevator emergency phone wireless call bell system nurse call system

specifications

1. Applicable for various types of SPC exchange and dispatching exchange system with feeding voltage of ****0V.

2. Ambient temperature: **0 ~ **0 degreeRelative Relative humidity: *0%~*5%

Atmospheric pressure: *6~**6Kpa Circumstance noise: <*0dB(A)

3. Sound level of ringing: >*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)