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Hongkong Koon Technology Ltd
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  3. Hongkong Koon Technology Ltd
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  5. Model KNZD-05 LCD - Inmate Phone Calls

Model KNZD-05 LCD -Inmate Phone Calls

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The inmate phone call is a vandal-proof, anti-violence phone with an LCD display that is ideal for prison communications.If you would like to consult or order inmate phone calls, please contact us at marketing@koontech.com or online server, we will provide you with competitive prices.size：280*148*130mm.

  1. .Applicatble for various types of SPC exchange and dispatching exchange system with feeding voltage of 33v-60v.
  2. Ambient temperature:-30°C-70°C Relative
    1. humidity:10%-95%
    2. Atmospheric pressure:86-106Kpa
    3. Circumstance noise:<=60db(A).
  3. Sound level of ringing:>=70dB(A).
  4. 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
    1. signal-level: Standard frequency:low frequency group:-9dB+-3dB,high frequency group: -7dB+-3dB,level difference between low and high frequency of conpound signal:2+-1dB,
    2. the total distortion caused by intermoudulation of harmonic wave is lower than the basic level by at least 20dB.
  5. Call transmission index:(5KM)SLR<=12,RLR<=-1,STMR>=10,output impedance is 600Ω.
  6. Super strong function is avaiable for dialing 12 groups of numbers stored in the memory.(maximum length of each store number is 16 digits)