prison telephone

Specifications 1.industrial telephone suit for prison 2.new fashional than others 3.Industrial telephone

NINGBO JOIWO EXPLOSIONPROOF TECHNOLOGY CO.LTD

This series of telephones can be used in internal conversation,communication in the prison and other areas where need to be monitored.

1.features:

 1  shell made of stainless steel,High anti-explosion ,it used in all the unattended substation environment or anyone else .

 2 suitable for kinds of SPC telephone exchange,which can interconnect to China Telecom net directly,connect in parallel with citizen telephon net.

3 with the function of monitor tone digital recording .can be connected to the monitor equipment directly.

4 The telephone adopt znic alloy keypad ,which life cycle ≥ 1 million ,push force 160-200grams,good hand feeling .

5 Handle adopts imported pc engineer material thermostabilith of the PTFE wire.Famous brand microphone clear conversation.

6 Hook adopts magnetic induction switch,life cycle ≥ 500 thousand.

7 Telephone board adopts famous imported broad and selected by high and low temperature aging test .It is provided with high stability,high anti-jamming capability ,and it is up to national standard GB/T 15279-2002

 

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2.Technical parameter
Defend grade	IP66
Ambient temperature	-30~+60°C
Relative humidity	≤95%
Atmospheric pressure	80~106KPa
Voltage	180--240AC
Feed current	25mA
Call transmission index	SLR≤12,RLR≤-1,STMR≥10,output impedance:600Ω
Frequency response	300~3400 Hz
Ambient noise	≤70dB
Ringing sound level	≥75dB

 3.product details

   web:www.joiwo.com